It doesn't seem very positive to me at that scale, from what I could see (which wasn't much). Cutting forces are likely to override the friction from the wheels, especially if there's a little dust on the surface, at which point it will go wild. I don't see how it will work close to the edge of a sheet of material either, since it needs considerable space for the wheels. But sure, go ahead and give the guy enough money to prove me right or wrong, and report back, okay?