A couple of guys here have them. They think it's great. Takes a bit of getting used to but both say it wasn't as bad as they thought it would be. Figuring out how deep to have the blade can also be a bit of trial and error. However, adjusting the blade is pretty easy.
If all you have is ice like on the video then figuring out how deep to have the blade would be pretty easy. It's rare that we get that kind of ice here for any length of time. Our ice can be irregular, or loosely covered with snow or has a thin hard layer of snow. In early spring it can be rough (like sand paper) with a patchy layer of icy snow. We can have all those ice conditions happen in the same week. The Switchblade seems to work well in all those conditions.
Mounting the kit to a brand new board can be a scarey thought as you do have to drill through it in a few spots.
A few guys have also just used hockey skates here.