Have anyone considered using a full-face mc helmet?
Any reason of why it should not be used for skiing beside aesthetic one?

I have a good full-face mc helmet that is just laying around unused for this winter season. I was thinking that the quality of mc helmet should be a magnitude better than the run-of-the-mill bicycle/ski helmet.

Just consider...

Alot of people complain about fogging when skiing in a full face ski helm. A full face motorcycle helm covers more and will probabbly be worse in that respect. It is probably heavier too.