Actually, if you can scrounge up just 8 hp, you couldn't do much better than dropping an Expert Sleepers FH-2 in there. And that not only gives note#/noteon/noteoff, but can also handle keyboard controllers that have...yep...poly aftertouch. And it's got a few other tricks up its sleeve, such as clock-synced LFOs, arpeggiators, VCO autotuning, and Euclidean pattern gens. To me, it makes more sense to have something like that in the cab rather than relying on outboard devices.