Earlier quoted context omitted.
Pentadactyl is EOL. Vimperator is still being actively developed..
I think that's an assumed EOL on Pentadactyl because of Electrolysis. The devs don't talk but the community is trying to come up with a way to continue. Vimperator has similar issues with Eloctrolysis, I think? I hope pentadactyl makes it, cos it's my favorite of the vim extensions. Vimperator just doesn't feel as advanced.
That alone is much more useful for me.