I use mine in the A/B/C setup too - mostly it's for 2 synth bass patches and an envelope filter.
Mine's in a looper pedal, so the I can effectively turn the Zoom off and on remotely, and then scroll through to A/B/C list until I get to correct patch for the next song.
The looper is from a PCB from Fuzz Dog and has a blend knob, so that I can alter the clean/effects balance on the fly.