In reply to readysalted:
for serious loads bergens are good (getting stuff into a basecamp, hauling gear to the start of a route), but for onthe go, you can shed a lot of weight by using an alpine pack. in summer half your weight carried could be just the pack...
id keep it, because for something like a week of climbing based out of a bothy or such, it will haul 30kgs of food and fuel far better than any alpine pack will. then take a light pack for the actual climbing.
prices? yep, a decent true alpine pack (ie one not covered in gimmicks and claiming 'alpine' because it has an ice axe loop) will cost from that upwards (check out cilo packs if you want to feel good about laying down 'only' 150 quid).
regardless too, the fashion police will get you in the end. they always do.