Pugs is dead, or to be optimistic, stalled. The lead developer is no longer actively hacking on the project, and the effort required to apprehend a large Haskell codebase has so far defied some of the best and brightest minds who have time to spend on it. So unless you're an accomplished Haskell programmer, I wouldn't recommend it.
If you want to get in touch with what's happening in Perl 6, I recommend having a look at Rakudo.
To get up to speed with Perl in general, I recommend you have a look at use.perl, perlbuzz and Planet Perl. That will give you a feeling for where the community is moving these days.
• another intruder with the mooring in the heart of the Perl