But the OP wants to conform to the styleguides of PBP & Perl Critics, and postfix-loops are disadviced

PBP advises against a lot of useful things. That doesn't mean that you shouldn't use them. It means that you shouldn't use them without a little bit of thought. In the right place, a C-style for loop is Just Fine. In the right place, a "postfix-loop" is Just Fine.