Is it compatible to define comment-like latex newcommands for jinja delimiters?

Question

I am starting to use Jinja for creating templates in latex. From what I saw, it is necessary to change the default jinja delimiters ({% and %}, for example) to avoid conflicts with delimiters used by latex. I have been given the following setup to use as starting point:

env = Environment(
    loader=PackageLoader(pages_module, 'templates'),
    autoescape=False, 
    block_start_string='<#',
    block_end_string='#>',
    variable_start_string='<<',
    variable_end_string='>>',
    comment_start_string='<%',
    comment_end_string='%>',
)

The problem is that now my IDE complains that I can't "use macro parameter character # in horizontal mode" in the latex template files. Maybe it is a bit of a silly request, but I would like to get rid of these false errors that may obfuscate other problems my IDE could detect on the file. Looking at this alternative set of delimiters and considering the possibility to define new commands with comment-like behavior such as this, would there be any problems with defining the following environment for Jinja:

env = Environment(
    loader=PackageLoader(pages_module, 'templates'),
    autoescape=False, 
    block_start_string='\JBLOCK{',
    block_end_string='}',
    variable_start_string='\JVAR{',
    variable_end_string='}',
    comment_start_string='<%', # or whatever, I don't plan to use jinja comments
    comment_end_string='%>',
)

And then using this in the latex template:

\newcommand{\JBLOCK}[1]{}
\newcommand{\JVAR}[1]{}
(...)
\JBLOCK{ block body }
\JBLOCK{ endblock body }
(...)

Do I risk getting some unexpected behavior or hard to pinpoint conflicts down the line by using something like that?