I've got about a half dozen runs in on these bad boys... They fit like a glove, very nice.  The only thing that I'm dissapointed in is the cushioning.  I had hoped to wear these for my trail marathon in two weeks, but I think I'd be better off with a shoe that's a little more comfortable in the long run.  These will work great in any trail conditions half marathon or under.  Anything longer than that and I can see some issues with comfort... The grip in grass and dirt is tremendous, I'm really going to like these.