In reply to Timmd:
> At the speeds good skiers can go at I'm wondering if a motorcycle helmet could be better?
> Same goes for cycling too I guess, but it'd be pretty hot, the more I think of a 30 or 40 mph crash the more appealing a motorcycle helmet seems though.
My ski helmet is way thicker skinned than any climbing, kayaking and climb lid I have, It's a proper layer of plastic rather than a point something of a millimetre over foam etc.. perhaps a little heavier, but not too much and it keeps me warm too, as they have less venting.
Granted you can always be unlucky and head plant into sharp rocks (schmacher style), in which case they may not help you. But, trees or a nugget skier, it's probably quite beneficial.