This guy just started one, and he's open to new members:

Ideas for study group sessions

We have a relaxed RIO PLO Chat group registered as a PokerJuice Study Group (PM me to join).

Open for all RIO members, PJ-active or not. We like discussing PokerJuice and Odds Oracle stuff, but it's also a social hangout. When Phil plays long HU-sessions, we become very partial. Other than that, it's an open-minded place. :-D 

Thanks for the responses guys. <3