In reply to malk:
Ok I may have been a bit misunderstood
Yes my buffalo fits well, (tight) and yes I get far too hot, walking into crags, and far too cold when I'm belaying.
Buffaloos as far as I can tell work well if you don't stop, ot they are wet.
So I only use mine for paddling, as do the majority of my paddling mates.
And you have to admit that you don't see many in the hills anymore and those that you do are usually worn by walkers.
Anyway. each to there own. personally I feel nothing beats.
thremal-fleece-thick fleece-down-waterproof.
and layers removed to suit.