O.K., this arrived on Thursday but today was the first day I got to crank my amp a bit and test it out.
It has booted the Maxon OD-9 off my board.
Reasons:
1. It can do everything the OD-9 can do with the bump switch engaged, and sounds like an OD-808 with it off
2. It doesn't have that annoying footswitch that the Maxon has, so I know when the pedal is on or off (I can feel it click)
3. The 100Hz knob
Here's a photo of it on my board (it's the one that ironically is switched off, but you can see the bump light is on).

Actually I prefer it with the bump off, at least when playing my Stockholm-loaded SG Junior through it.
I hope I don't pull these ugly guitar faces when I play with it, LOL
http://www.youtube.com/watch?v=h0C9UkCPUVM