In reply to UKC Gear:
Minor detail, but the rubber is in fact Vibram XS Edge, not XS Grip. And maybe you should update the conclusion to include the gripe about the velcro failing.
It may be that I just need to break mine in properly, but I've been surprised to see so many people calling these sensitive. To me they feel stiff to the point of it being impossible to feel what I'm standing on. This is great for edging, as I can stand on the tiniest edges with little effort, but on slabby terrain or just sloping footholds I find them absolutely useless.
My main basis for comparison are my old Scarpa Stix, which I find almost as good at edging, and far superior at everything else (except for comfort - the Miuras really are exceptionally comfortable). Unfortunately these are no longer made (anyone have a pair of 43's in decent shape they want to part with?)