Yeah I will drive the GR with the the GK pickup. Fishman is in mono mode as is the GR per Vguitarforum and Fishman. The slight misfires and need for yet another power outlet for the midi host is what is driving the thought process. Also; My the G string is slightly dead and needs some tweaking. It might be able to be fixed by raising the bridge a hair, not sure.
God, I hope you don't have to set up separately for each of those pickups. The Fishman was a nightmare to get right. If you have to do the same thing for the GK, good luck!