Multi-purpose helmet?

[Dolores Malone]

Hi, I'm in the market to buy a water helmet, pretty much have the Black Diamond Half Dome in mind.
But since there are other sports that I'm into also require (or recommend) helmet such as whitewater kayaking, rock climbing, snowboarding and rollerblading (not too important), I'm wondering if there a multi-purpose helmet that can be used for all the activities that I'm into?
Is BD Half Dome acceptable for river kayak? or will I be better off buy a kayaking helmet and use that for climbing?


Thanks!