In reply to CLYoung:
I have the kinesis jacket, not sure how similar the trousers are, so maybe add a pinch of salt.
For me it's a great warmth as an active layer when it's really cold, trad belay jacket for when it's about 0-10 degrees C, and a comfortable layer for summer evenings when static, or for windy summits. I imagine trousers of the same material would be too warm unless it's really cold, but maybe that's just me.
Durability wise, the material is not that tough, I have put a couple of nicks in it without abusing it much (I never climb in it etc). I think the jacket is marketed as a midlayer so the trousers may well be more robust.
Sheds water really well, and dries extremely fast, no complaints there!