Scott
I have a bit of the same situation on chord recog. with the SD1. I can't (won't) play in split mode because I want the same high quality preset piano sound across the board -and you only get that in pianist mode if you want to trigger chords in the normal range. So I opted to disable the sustain pedal and its only function now is to lock the chord in - so no right hand notes affect it. Suprisingly enough I found that when I played the SD1 from my FP3 - I could use the SD1 sustain pedal to lock the chord - but using my FP3 sustain pedal (midi-out) gave me back sustain capability without sacrificing my chord lock. I have found this helpful to me because because once I trigger a chord I am free to change voicing in my left hand comping as the mood strikes.
Mike