Bought this to go with my Vox Valvetronix VT20+. It's quite big, and comes with a very long lead. So far I haven't had the chance to use it in a "live" situation, only used at home up to now, but it's more than long enough for a medium to large stage. Don't complain if it's too long, just use some ties to make it shorter! Very solid construction, you'd need to put some real weight on it to cause any damage, but the switches themselves are very receptive, so there's no need to actually stamp too hard to switch between the channels. It does exactly what it's supposed to do - switch between the various banks and channels on the amp. However the one drawback is the lack of any LED's on the switches, which means unless you've remembered which channel you've selected it can get confusing.
But other than that I'd definitely recommend it.