I work in an office attached to a warehouse. I'm running around like crazy with my phone in my pocket or hand. Its durable and the screen protector is enough to keep it safe in the warehouse (dropped it a few times already - no issues.) (Get gluey stuff and dust all over the screen - cleans right off)
It also is slick enough to easily to slip into/out of my pocket, but not so slick i worry about it falling out on its own. I've also never lost grip when working with soaps or grease (both of which wiped off easily)
It's also cute as hell. I think three coworkers have now bought it in different colors/styles. We all love it.