I really like the long-tailed Q-shape kp-fonts has with the oldstyle option. However, I do not want the ct/st ligatures that this option provides, nor do I particularly want the long-tailed Q in upright text. Is there an option to automatically replace any letter Q by the long-tailed Q-shape (kp-fonts provides \othertailQ), but only within \textit{}?
\documentclass{article} % or some other suitable class
\usepackage{kpfonts} % Palatino clone (text and math)
\begin{document}
\scshape
Quo vadis \quad
\othertailQ uo vadis \quad
\itshape
Quo vadis \quad
\othertailQ uo vadis
\end{document}

