The grip in these is the best I've experienced, on all types of terrain - even wet rock to an extent.
Comfort is also pretty good, although this is a more subjective aspect of any shoe.
Price speaks for itself.
My issue is durability and my experience seems to echo that of others who have contributed to this thread.
Firstly the insoles disintegrated after the first serious run (Blencathra race in June). MoreMile sent replacement insoles and a free pair of socks for my troubles.
Then after about 50 miles the mid-soles and uppers began to part company, during Kentmere Horseshoe race. This was reported to MoreMile, who immediately sent out a replacement pair. The damaged ones have been put back together with a liberal dose of shoe-goo and are performing well, so all in all I'm relatively happy. £30 + £7 for shoe-goo is still cheaper than mud claws