After 80+ days of skiing in the Sidewinders, I must say these are a durable functional pant. They are light and breathable (especially with the side zips) enough to wear on a warm spring tour with a pair of gym shorts. But they(along with a pair of patagonia R1 pants) kept me warm through a weekend of resort skiing with -15F temps. The gaitered cuff works great, as do all the zippers, and they show little damage around the cuffs from ski edges that would be very noticeable in a comparable pant.
A note on fit. I am 6'2", 160lb, and a 34"inseam. I got the large pants, and I have the belt cinched up just about all the way. They look a bit baggy, but the hem is just above the ankle of my boot, to help avoid getting tangled in crampons, edges, etc.