I am happy with them. I chose them due to needing a tough trail tire. They are stiff at first. Running a double beadlock lets me air down to compensate for the stiffer sidewall. They are not as stiff as I figured they would be. Still run about 6psi on the trail and 12 or so for the race.
I really would love this exact tire in a sticky. I would gladly pay the weight penalty for the toughness.