In reply to facet:
> I guess then when you are climbing you have a smaller sack, but pointless in my opinion, why get everything wet, or have ropes dangling around when you can get everything in say a 45 ltr pack. Fashion!
It doesn't make much sense to me in Scotland, unless of course its the only bag you have and you can't afford another. Maybe it's a tactic people have brought from the Alps? It might make more sense there. I don't actually know anyone who goes for the small bag approach here.
Having a small bag for climbing is nice but then I hardly ever climb with my sack in Scotland anyway so all the benefit disappears. I just carry a wee drybag with straps on routes. Another negative is that a winter bag can be pretty heavy, especially if stuff gets wet and most of the 30l climbing packs I've seen aren't designed for that kind of load. My middle aged back probably wouldn't thank me for a 2hr walk out with wet ropes on a bag designed for summer cragging!
Edit: maybe it's a raven thwarting tactic? 😀
Post edited at 06:59