The Marc thing... Sad to hear about. I'm sure he is elsewhere on the
varied forums.
Foot switch - BAD! Foot controlled faucet valves should be mandatory! JMSO And yes I do want them in my own home. Think of the water savings, and ease of operation when washing dishes and pots.
Back to the switch - I once had an accident with a jammed hole hog that pulled my hand up into my other arm - pinching my hand on the trigger. The action of this knocked the ladder out from under me - which the natural reaction to falling is to grip tighter - on the switch/trigger. (Me - dangling from the framing until I kicked the cord out - go ahead and laugh it was funny.) No injury so I guess no harm done - but since then I choose the right angle that I can easily over power if necessary. But my point is that switches that will enhance the danger due to your natural reaction should be avoided.
I assume the natural reaction to some sort of danger at a sink is to push/up away from it with your feet which in this case could put you in more danger. Just a bad idea.