My understanding of Pugs (which is from completely outside the popular crowd) is that Pugs was Autrijus's way of playing with the neat toys before Parrot was ready. In doing so, the Pugs team is going ahead and writing a large portion of the P6 tests, which is really helping Larry and the P6Language crowd out a bunch. (About half the P6L questions now are clarifications from the PugsCrew and that percentage is expected to rise for a while.)

Perl6 is still planned on targeting Parrot as its primary VM, though the Haskell version may have benefits down the road. (I'm not sure what those would be as Haskell should be implementable on Parrot ...)