[Has anyone seen these? I suspect that they might not be available any longer. I saw a guy using them this past winter, and its setup was similar to the Kahtoola in that it included the grivel crampons and what seemed like a regular boot into the binding of the snowshoe form]
Used them once. The crampon just didn't lock into the snowshoe very well, and kept coming out.
Threw them out.
It seemed like a good idea at the time, but they just didn't work well. Too bad, the concept was interesting.