I use that footswitch! its pritty solid and takes some abbuse live.
My band use alot of keyboards but we havent a keyboard player,
we feed the pedal into emagic logic (laptop) exs24 sampler
and the foot control sets of the samples from there, and we have our drummer playing with a click so its all spot on in time, well as long as i hit the right foot switch at the right time!
back to the main topic i pritty much loved the gate feature on my jcm 800 kk
and wouldnt mind seeing this being a standard feature on most amps.