Regarding companies that do accept Perl solutions, I looked at some job listings, and out of the 40 currently listed, 23 included the terms "OO", "Moose" or "Catalyst". I've been keeping an occasional eye on that page since 2005 and haven't noticed much change in the demand for OO Perl skills.

Certainly in every Perl job I interviewed for, they were looking for people with skills to maintain their OO Perl codebases.