Andrew Rankine wrote:Thanks jjue, that looks like a great solution. Do you think it would be possible to substitute mountaineering boots for snowboard boots in those bindings?
edit: whoops, I was thrown off by Moapa's early comment about splitboards. For the mini-skis under discussion here, ignore the part about riding heelside

I've done this. At the time I couldn't afford snowshoe boots. Actually I used leather workboots; mountain boots would probably be better-suited (stiffer and thicker, with more insulation that would act as padding) but are similar enough for purposes of discussion.
First, it's not very comfortable. Snowboard boots have a lot of padding, notably on the shin; my boots had none. If you crank the bindings down very tight, your feet won't move and you wont' get impact bruises, but you're going to have a really tight binding pressing on your shin all day long.
Second, fit and control are not ideal. The narrowness of the boot wasn't really a problem - crank down the toe binding and the boot won't move. But your foot position won't be the same, because the soles are a different shape and thickness. The heel is a particular problem. Snowboard boots elevate your feet; you'll feel the difference. You also have to be careful because the non-rounded heels of a regular boot will stick out further, and can catch when you ride on the heel side.
Finally, I had to shorten my bindings to get this to work at all - otherwise they were too loose, and/or the excess strap length stuck into the snow and acted as a brake. I was lucky enough that the shortened bindings still work (barely) now that I have snowshoe boots, but YMMV.