Cool those look nice! I hadn't heard of them either until I saw this thread. Jumped over to nitto's website
http://www.nittotire.com/#index%2Etire%2Etrailgrappler
Look pretty good - I'll have to keep my eye open and see how the reviews come out. I checked my tire supplier and they don't show any listings for it yet so I can't say on how the prices will be on them yet.