I've had this jacket for 1 year and a half now and love this thing for all tasks, either going to class or climbing on cold days. The windproof technology is fantastic, no wind cuts through it at all. I was on the beach at St. Simons in the winter with 20 mph winds going constant, sometimes flaring up to 30-40 and felt none of it through the jacket. I did have to tighten up the collar, my only con, to keep it from funneling down my back. The waterproofing is very good as well, it will saturate in heavy rain eventually bit it sheds water pretty well in lighter rains.
The jacket fits pretty athletically but doesn't hinder movement at all. At 5'10" and very lean, a medium is a good fit. I originally got a small but it was too short in the waist, as many reviews have stated.
The construction feels very solid, I'm not scared of tearing it up on trees or rocks while climbing. I've seen no problems in the seams or stitches coming out. The fleece on the inside of the sleeves is wonderful, and the wrist has a gasket like fleece ring to almost seal off the inside from weather, a feature I love.
My only con is the collar, which as said before, is kind of awkwardly big. It fits ok zipped up all the way or partially, but feels a little weird when its not zipped or very low zipped. It also doesn't fold down well as its very stiff. A minor bother though. Also, the chest and arm zipper are very stiff and hard to do with one hand, other than that it's great!