I've never seen:

  $CONDITION && $TRUE_CASE || $FALSE_CASE

used as a Perl idiom in lieu of:

  $CONDITION ? $TRUE_CASE : $FALSE_CASE

I can't claim to have worked with Perl much prior to Perl 5.6/5.8 though, so it may have been an older idiom (though I doubt it as one of Perl's influences was Awk, which also has a C ternary operator, IIRC).

That said, using truthy/falsey values in Python doesn't seem super common. I surprised a couple of interviewers by doing that while implementing some tree manipulation functions.