The tire seals really well as a UST setup, the tire is very predictable, the cornering, braking, and pedaling performance are uncomparable, and the tire is very resiliant to puctures and slashes.
The breaking performance is amazing! The big side knobs bite like no other and give such good feedback. It's defenitely not one of those tires that just drops you on your ear, it starts to slide and lets you know your going too far. The tire hooks really well on big power bursts out of corners. And as far as UST is concerned... well Hutchinson developed UST with Mavic, what more do you want. The MX casing is defenitely the way to go for DH UST setup and they are super resistant to puncture and sidewall slash. Amazing tire all around.