That is good to hear about how they work in the sand, I am needing a new set of tires soon and am seriously considering the wild peaks. I just wanted to make sure they would work reasonably well in the soft sand. Nothing more embarrassing than getting stuck.
My trip to AZ a few weeks back took me through some soft sandy washes. Aired them down a bit and tires worked great, the tread on the sidewall act as little paddles. Tread held up fine over the rocks as well. I am very happy with my purchase.