Very stiff boot, so if that's what you're looking for all's well but I found them too stiff for my liking. It's even a bit of a chore to walk in them, they're that rigid.
Seem to be pretty durable from my experience (little bit of superficial wear on top of toes but that's it), and the laces, although looking thin, are bloody tough. You can pick spare laces up for like under $10 anyway.
Regarding comfort I wasn't that impressed. Got a lot of ache in my shins and feet (especially lead foot). I'll probably look around for something a little more mid-flex.