Yeah, Chevy.... How does one man get so lucky?
No offense intended. It was a rehearsal, and I'm sure that it would be fuller at the gig...
I don't know if you have tried one yet, but if the Audya's quirks eventually put you off of using it, give the Roland G70/E80 a try. At least for drums, it comes closer than anything else out there to that degree of liveness, but without the fills recorded into the styles (as mrdave has found out for us) and with the ability to reprogram and edit easily if you need it.
I have turned styles that were wrong for a song into the correct beat by as little as moving a kick drum here, a snare drum there. I'm afraid that the Audya won't give you that, at least on the Live Drums loops.
Yes, the Audya's drums sound exceptional (the Live Drum ones), but unless they are a PERFECT fit, you are going to have to put up with the style creator's beat whether it works or not. Maybe they will be sufficient for you, maybe not...