In reply to joe.91:
I had a pair of crux's resoled by LSR and they were pretty good I have no doubt the sole would have lasted a decent amount of time, unfortunately the uppers had been knackered by me and they didn't last much longer after getting them re-soled so that might be a more limiting factor.
The crux's are a fair bit lighter than the mescalitos so I'd imagine they would be pretty good. They didn't replace the whole sole unit on mine just the vibram outer and built up areas I had worn through into the midsole.