I work in a warehouse and have been using high end Ralph Lauren Cargo pants and destroying them with up and down ladders, pulling stuff off trucks and just other basic labor around the place. These new pants feel much sturdier, they have an almost "tightness" about the material that makes them feel like I am going to be more protected in these pants.

Updated 3/23/13
Been using these pants for a few weeks now and my only complaint is the fact the cargo pockets are slightly shallow.