Sorry - not meaning to highjack the thread. I have the same camera and I get an error message when I use it in the mountains. It seems when it gets cold (maybe condensation?) that the error occurs. Have you had this issue?
I use a dakine "Sequence" Pack. I've found it holds the gear much closer to my body and more balanced than several others I've tried. Lowepro makes the best all around camera bags, but they don't ride very well while doing active sports. The Sequence has a back opening camera and lens area and has some other cool stuff like diaganol ski carry and goggle pouch. I don't recommend the Slingshot as it only has one strap, unless you don't ski very hard.
I have a D40 and use it all the time on the hill. I carry is same way as Bob Peters and seens to work well. They make Camera Armor (http://www.ritzcamera.com/product/222045502.htm) and waterproof housings though the waterproof is a bit bulky for skiing, the armor i do think would work well for a little more protection on the hill.