In reply to Mr Aboulderer:
First a caveat - I'm a punter, not an uber-boulderer, so I can't comment on how they'll help anyone on a V8. But I imagine they'd serve you very well indeed. The fit is wonderful, on me anyway, like wearing a rubber sock. They look very uncomfortable, but are actually one of the comfiest shoes I've ever had. It's weird to look down at super-technical shoes and feel comfortable. They smear well and edge beautifully - I once chickened out of a very awkward slopey mantelshelf by standing on a couple of tiny edges instead. They stuck like glue - I'm pretty sure I couldn't have pulled those moves off with any other shoe I've had.
The price is off-putting (I got mine cheap, couldn't justify paying full price) but apart from that I have nothing but praise for them. By far the best shoe I ever had, even better than the Katanas and the Anasazis.
Hope this helps.