In reply to Beccakatesmith:
Funnily enough I have just gone through this process myself - prepping for a Welsh 3k attempt this summer and my Scotts were not grippy enough on the rock so I looked around and settled on the Inov8 Roclite Ultra Graphene shoes. I chose these as they have a wide toebox, are incredibly grippy and are cushioned enough for the route without too much compromise on technicality.
So far I have run 100 miles in them, longest training run being about 3 hours. They have performed really well both on wet rock and in mud but I do have to use anti chafing cream on my toes and under arch to prevent rubbing (wasn't a problem in the Scotts so the fit / comfort isn't as good I think)
If they fit your feet then they are definitely worth a try. I loved my Scotts more but can't recommend them for the Welsh 3k due to the amount of rock on the route.
What they really need to make is a Scott upper with an Inov8 sole......