I've used the i13 poses in Studio for the G2Female and Male and they worked pretty darned good.  The only problem I had was that some of the hand gestures warped the plane of the hand like it was drawing back on itself with arthritis.  Easily adjusted.

As a fellow i13 junkie, I'd say get 'em while they're on sale and have fun with them.  At some of the prices you can catch their pose packages at, even if you only wanted a couple of them, it's still a bargain.

(And you can tell 'em I said so!)