I have no experience with them, but they do look like a very capable all terrain tire.

 

Had them on my Kodiak 400. The tires work great in my opinion. Rode Pickett State Forest here in Tennessee and had no problems. They handled the rocks, mud (about 10" deep), and off camber drops and climbs with ease.
They were off of a polaris 800. I know a yamaha with popo tires. But, I was able to keep up with the big bores everywhere they went.
Hop this helps.

Wayne

 

I have a set of ATRs??? taken off an Outlander XT Max 800. Nice tire. Over 2200 miles on them. Starting to wear out. Bighorns next spring before Moab.