I have a couple of USAK casuals that I bought over a year ago. They each get worn one or two days a week. Neither of them have ever been pushed to that level of adventure, but I don't hesitate to wear them out into the boonies on hikes, geocaching, camping, fishing, 3D shoots, etc. etc.

When the terrain is going to be really rough I usually wear a poly-cotton kilt of my own making. It's not because the USAK can't hack it but because, when the likelihood of real damage reaches a certain level, I'd rather risk the well-being of a $20 garment than the $120 one.

Nice pics BTW.