I setup my keyboard similar to Donny Pesce: one pedal for Vocalizer harmony & the other to activate sustain. The only difference setup difference between me & Donny (because my background is as a piano player), is that I assign the 'right' pedal to sustain, and 'left' pedal for vocal harmony.

I also own a Yamaha MFC10 multiple pedal foot controler unit programed to trigger all the arranger functions (intro, endings, 4 fills, start/stop, etc) but found its heavy & bulky size too much hassle to drag around to gigs. Though the MFC10 has advantages, I now keep the MFC10 at home and learned the tricks of making the left hand perform 'double duty': playing the kb (full 3 & 4 note chords) & button pushing concurrently.