havent used ice tires on my full size bike.... I have on my 20 inch Dahon ...
I woudnt use the mtb as it feels bigger and the "lower" more open feel of the folding bike make me feel safer in touchy situations.

the tires sizzle like hot oil in a frying pan on dry roads, but are unreal on the ice.... I bet you are looking for that black ice when u have those tires...
( just be carefull when stopping your feet will slip away !!!... )