In reply to snoop6060:
Mine lasted a good 18 months almost continuous use. The sole wore down before the uppers started to split; I'd recommend using a suede conditioner at the usual toe flex points. I'm still wearing the old pair for mooching around town, with holes and sloes worn through to the (rather slippery) EVA midsole. The inner is still in remarkably good condition. I usually find shoe uppers pack up before the sole.
They were a revelation for me; shoes shaped like feet, and were comfortable out of the box. I wore them for one day before heading off to do the TMB, which they tackled admirably, without any blisters, and felt secure on all terrain.
I bought another pair to replace them. The price has gone up quite a bit since the first pair (another 'sunlit uplands benefit'...?).