In reply to FlyingSaucerAttack:
Hey bud,
I own two models of this boot, the s evo and the evo extreme, as does my partner.
They are, to put it simply, awesome boots.
In terms of life span it is just very dependant on what you're doing with them.
The only thing I've noticed with the s evos is that the sole unit is wearing -quicker than others boots- but they have had _alot_ of use over the last two years including an alpine trip, a Cuillin trip lots of hillwalking and plenty scrambling. This is due to the fact that the rubber is intentionally soft to give you grip on rock though.
So if you want a great fitting* boot that will look after her feet and work well on rock you cannot go wrong with these.
If however you want something that wont wear as quickly, Just be prepared for rubbish performance on rock!
*for me. I do suggest your partner tries them on in store first.