My friend just got a pair and they're sick !!
I didn't really think twice when I 1st saw them. But when he wears them you can't even tell.
I tried them on and they are soooooooo comfy.
They have hard knee pads built in to the knees (that you can take out) with sweet padding on your ass and then a solid bit where your coxic is. They are just so comfortable.
It would make going down hard on a rail at least a little bit less painful !
Check them out.