In reply to cragferrit: I'll offer a view of balance. I think the VR rocks, I've worn it next to skin and with a thermal under for winter climbing, winter mountain walking and ski mountaineering. I was aware of the issue with sleeves/arms when I bought it. I bought it ever so slightly on the large side - I'm always either L or XL with mountain clothing, depending on manufacturer. Buying XL gives me the movement I need without being baggy, and because it is ever so slightly big, means it vents well.
for me the problem with the inner of the sleeves sitcking etc is far outweighed by the positives of this item.
As for waterproofing, of course a Buffalo will shed more water! However, washing the VR with softshell wash and/or waterproofer does the business too.
As I said, I just wanted to give a view for balance. Most of these things come down to the buyer deciding - probably based on hunch and colour and look rather than the specifics, if we're entirely honest!!