Same here. I'm very satisfied with the PSR2000's vocal harmonizer, and I make a decent living with music. Obviously, the vocal harmonizer doesn't suit Uncle Dave's or Scott Yee's needs for large venues. The quality of the harmonies is A-1, but it sounds like the rack-harmonizer has certain features that the onboard harmonizer doesn't have.

If you don't use a volume pedal, you could use a sustain pedal to activate the vocal harmonizer. I use a sustain pedal to activate the voice harmony/echo button. If both pedals are taken up, I wonder if the MFC10 could activate the harmonizer on/off button.

Larry