Lasse Lammert
HCAF Blitzkrieg
I'm exactly the same with velocities, but that's why I use MIDI. You focus on the triggering in one run through the record, then after that you can just focus on mixing, and set up as many samplers as you need, all keyed from that same MIDI track. You can split the velocities up whichever way you want.
yeah, I'm doing the smae (usually not with midi though), but same principle....
you'll still have to edit the track together from several tracks/instances etc