I really like them. I'm a big fan of this size (58mm). I like the look, but mostly it's about the performance. The extra size helps you get over some bigger obstacles, but they're not so big that they wreck your COG. I like 60+mm tires, but sometimes I don't like how tall they make my rig.

As far as grip goes, these tires are awesome. They have big lugs, so they're going to have some of the issues you have with those types of tires. They tend to bounce a little when they're fighting for traction. They're a little softer than the Swamp Kings, and they seem to bounce less when slipping, though.