I'm using a heavily patched version of verbose-trad2 style for biblatex. I'm new to this package, and I'm struggling to find a way to have author's initials only in first citation, and author's full name in bibliography (picture).

I'm possibly looking for a command like citeauthor wich chould affect the way (not properly the style) this and other fields are displayed in a citation, independently of and in parallel to their style in the bibliography.
Disclaimer: In the MWE I used \cite for the sake of brevity and readability. In my document though, I will exclusively use \footcite
MWE:
\documentclass[11pt, twoside, openany]{book}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[italian]{babel}
\usepackage{cfr-lm}
\usepackage{geometry}
\usepackage{fancyhdr}
\usepackage{lipsum}
\usepackage{microtype}
\linespread{1.5}
\pagestyle{fancy}
\fancyhf{}
\fancyhead[LE,RO]{\thepage}
\fancyhead[CO]{\textsc{\textls[50]{\MakeLowercase{\leftmark}}}}
\fancyhead[CE]{\textsc{\textls[50]{\MakeLowercase{\leftmark}}}}
\renewcommand{\headrulewidth}{0pt}
%%%%%%%%%%%%%%%%%%%% bibliografia %%%%%%%%%%%%%%%%%%%
\usepackage[autostyle,italian=guillemets]{csquotes}
\usepackage{xpatch}
\usepackage[style=verbose-trad2,
language=italian,
useprefix=true,
citepages=omit,
backend=biber,
ibidpage=true,
]{biblatex}
\usepackage{biblatex-opcit-booktitle}
%
\begin{filecontents}{\jobname.bib}
@book{viora,
author = {Viora, Mario Enrico},
title = {Consolidazioni e codificazioni. Contributo alla storia della codificazione},
location = {Torino},
date = {1967},
shorttitle = {Consolidazioni}
}
@book{lopez,
author = {Lopez, Roberto Sabatino},
title = {La rivoluzione commerciale del Medioevo},
location = {Torino},
date = {1971},
shorttitle = {La rivoluzione commerciale},
}
\end{filecontents}
\addbibresource{\jobname.bib}
% style
%queste tre linee di codice per la compatibilità del titolo corrente della bib. in sc
\defbibheading{sc-comp}[\bibname]{%
\chapter*{#1}\markboth{#1}{}%
\addcontentsline{toc}{chapter}{\bibname} %questo per far venire la bib. nel toc
}
\ExecuteBibliographyOptions{giveninits=false, dashed=false, dateabbrev=false}
\DeclareNameAlias{sortname}{last-first}
\NewBibliographyString{ibidemloccit,ibidemnoloccit}
\DefineBibliographyStrings{italian}{%
bibliography = {Bibliografia},
editor = {a cura di},
editors = {a cura di},
idem = {\textsc{Id}},
ibidemloccit = {\mkbibemph{\autocap{i}bid\adddot}},
ibidemnoloccit = {Ivi},
}
\renewbibmacro{publisher+location+date}{%
\iflistundef{publisher}
{\setunit{\addcomma\space}}
{\setunit{\addcolon\space}}%
\printlist{publisher}%
\setunit{\addcomma\space}%
\printlist{location}%
\setunit*{\addspace}
\usebibmacro{date}%
\printfield{edition}%
\newunit}
%questa mette l'edizione in apice
\DeclareFieldFormat{edition}{%
\ifinteger{#1}
{\textsuperscript{#1}}
{#1\isdot\setunit{\addcomma\space}}}
%questa per togliere la prima occorrenza del numero di edizione
\newcommand{\replaceedition}[1]{%
\xpatchbibdriver{#1}
{\printfield{edition}%
\newunit}
{}%
{}
{\typeout{failed to patch driver #1}}
}
\replaceedition{book}
\replaceedition{collection}
\replaceedition{inbook}
\replaceedition{incollection}
\replaceedition{manual}
%questa stampa l'anno di edizione originale
\renewbibmacro{date}{%
\printdate
\iffieldundef{origyear}{%
}{%
\setunit{\addspace}%
\printtext[parens]{ed. or. \printorigdate}%
}%
}
% sostituisce "e" fra autori con virgola
\AtBeginBibliography{
\renewcommand*{\finalnamedelim}{%
\ifnumgreater{\value{liststop}}{2}{}{}%
\addspace\addcomma\space}%
}
%volumi riviste
\renewbibmacro{volume+number+eid}{%
\setunit{\addcomma\space}%
\printfield{volume}%
%invece di \setunit{\adddot}%
\setunit{/}%
\printfield{number}%
}
\renewcommand{\revsdnamepunct}{} %toglie virgola fra cognome e nome aut.
\renewcommand{\intitlepunct}{\space} %toglie ":" dopo "in" dopo elementi in raccolte (art, inproc, incoll)
\renewcommand{\newunitpunct}{\addcomma\space} %virgola fra aut. e titolo
\renewcommand{\mkbibnamegiven}[1]{\textsc{#1}} %nome autore sc
\renewcommand{\mkbibnameprefix}[1]{\textsc{#1}} %particella autore sc
\renewcommand{\mkbibnamefamily}[1]{\textsc{#1}} %cognome autore sc
%toglie "in" dopo titoli art. (solo art.) in riviste
\renewbibmacro{in:}{%
\ifentrytype{article}{}{\printtext{\bibstring{in}\intitlepunct}}}
\nocite{*} %stampa tutta la bibliografia, anche roba non citata nel testo
\DeclareFieldFormat{journaltitle}{\enquote{#1\isdot}} %nome rivista in tondo fra caporali (=enquote)
\DeclareFieldFormat[article]{title}{\textit{#1}} %titolo art. in corsivo
\DeclareFieldFormat[article]{volume}{\textsc{#1}} %vol. rivista in sc (per num. romani)
\DeclareFieldFormat[incollection]{title}{\textit{#1}} %nome art. in miscell. in corsivo
\DeclareFieldFormat[inproceedings]{title}{\textit{#1}}%come sopra
\DeclareFieldFormat{editortype}{\mkbibparens{#1}} %a cura di fra parentesi
%segue macro per impostare ibidem ivi id in maniera corretta
\xpatchbibmacro{author}
{\printnames{author}}
{\iffootnote
{\ifthenelse{\ifciteidem\AND\NOT\boolean{cbx:noidem}}
{\usebibmacro{cite:idem}}
{\printnames{author}}}
{\printnames{author}}}
{}{}
\xpatchbibmacro{bbx:editor}
{\printnames{editor}}
{\iffootnote
{\ifthenelse{\ifciteidem\AND\NOT\boolean{cbx:noidem}}
{\usebibmacro{cite:idem}}
{\printnames{editor}}}
{\printnames{editor}}}
{}{}
\xpatchbibmacro{bbx:translator}
{\printnames{translator}}
{\iffootnote
{\ifthenelse{\ifciteidem\AND\NOT\boolean{cbx:noidem}}
{\usebibmacro{cite:idem}}
{\printnames{translator}}}
{\printnames{translator}}}
{}{}
\renewbibmacro*{cite:ibid}{%
\printtext{%
\bibhyperlink{cite\csuse{cbx@lastcite@\thefield{entrykey}}}{%
\ifloccit
{\bibstring[\mkibid]{ibidemloccit}%
\global\toggletrue{cbx:loccit}}
{\bibstring[\mkibid]{ibidemnoloccit}}}}}
\begin{document}
What I get: \cite{viora}
What I want: {\sc M. E. Viora}, {\it Consolidazioni e codificazioni. Contributo alla storia della codificazione}, Torino 1967
Dummy quote to prevent \emph{ibidem}: \cite{lopez}
Second quote: \cite{viora} (correct)
\printbibliography[heading=sc-comp]
\end{document}

Package biblatex Warning: Delimiter 'finalnamedelim' in context '' already defined, overwriting on input line 83.! LaTeX Error: \mkbibcompletename undefined; while copy-pasting the first snippet in another document returns:! Package etoolbox Error: Toggle 'abx@bool@giveninits' undefined.Running on TeXWorks. – Mattia Apr 29 '21 at 21:07biblatexv3.16. The error about\mkbibcompletenamebeing undefined means your system is outdated. Ignore the rest of my answer and only focus on the\renewbibmacro*{cite:full}. In your old version things might work with\toggletrue{blx@giveninits}instead of\toggletrue{abx@bool@giveninits}. – moewe Apr 29 '21 at 21:20\DeclareDelimFormatcommand does not work (I get no errors though) nor the other solutions using xpatch. Shall I ask a dedicate question? The MWE would be the same as above plus your addendum – Mattia May 05 '21 at 20:16biblatexyou may want to try\DeclareDelimFormat[bib]{nametitledelim}{\addspace}. With an older version it might be\renewcommand*{\labelnamepunct}{\addspace}. (At least if I understand which comma you mean.) If that's not what you want, please open a new question and explain in more detail which comma you mean. – moewe May 05 '21 at 20:28.bibentries that reproduce the behaviour, I didn't manage to reproduce any issues with@incollectionentries just now). – moewe Jun 09 '21 at 14:10