Yeah man - I've been testing back and forth with bleo on skype whenever we're both available, but the project was (obviously) put on the backburner for a bit. What happened was I ended up chasing down that sample problem which required an entire rewrite of the communication routine of both parts. It ended up taking a lot of work and I burned out.
As it stands:
VRC6 is working perfectly (sawtooth table was a little sour, but that's fixed)
Note offsets / channel reassignment work great, controllable a gamepad, 6 note chords are fun (2pulse + triangle + 2 Vpulse + sawtooth)
Samples do work, but it's a bit of a kludge and I haven't tested how it affects performance. Not sure if I'd call it a success yet.
I'll gladly send the current ROM / arduino sketch to anyone who'd like to test it, just PM me.