To answer Silvertones, I'd like to use a foot controller to:

1. tweek volumes, tones, etc.
2. control the conductor
3. do a selection of the next tune to play (e.g., from My Favorites list)
4. to try other styles "on the fly" while a tune is playing
4. and numerous other things to

free my hands for other purposes. I agree with Mac, unless I got really good at using my feet, I suspect I'd use this thing during practice sessions, with friends during informal/relaxing sessions, and for possibly only very specialized things during a gig. Since I play a guitar, my hands are already quite occupied during sessions.

Catch ya later,
Cecil