From a few minutes of messing around with it: very cool... more of a range of things than a normal tremolo pedal, some real otherworldly sounds available. It has a "shape" control that I need to play with more.
Pay attention to Musician's Friend, as they seem to blowing this line of pedals out in their deal of the day. Got it for $89... a friend succumbed to the delay for $135 a few weeks ago, and the day before this one came up it was the deal again for $115 (he was pretty pissed).