In reply to richurc: I got some half price patagonia super alpine salopettes from the Outside christmas sale, and so far have been very impressed with them. No baffles on the zips, but they have stood up to driving rain. Made of the old pro shell, certainly seems durable - kicked with crampons and ski edges, and dragged over rock, and no real marks or tears.
I would stay away from event for full on winter use - I have a pair of rab latok waterproof trousers, or to use their accurate name, rab latok trousers. Totally not durable or waterproof enough. Picked up loads of tears from relatively minor scratches, and the inside lining has been totally shredded from abrasion on boots. Thighs wet through from legs constantly touching when walking/stepping up. They don't even seem to breath particularly well.