Jinroh's played plenty of ragers.

And for the record, if you are in organia as a non-rager, you still can't quaff when you are raided. Unless you are psychic.

Your suggestion for a shadow to knock them out seems to ignore that against berserkers, at least, he's probably dead if he fails the knock-out.

And whilst I agree with your comment on synergy to some extent, the scions tend, on the whole, to have few members, and thus not get to take as much advantage of synergy.