I'm looking for a case that will allow me to take my iPhone to work without me worrying about it. I mainly do construction type work so it needs to be tough and be able to keep all the dust and such out. I don't need access to the dock connector or speaker/microphone but a protected camera window would be nice. Ideally it would be something I can easily throw on the phone when I leave in the morning and remove when I get home. Screen protection should be built into the case not something I attach to the phone. Any ideas? I was thinking of getting a simple leather pouch, but it would be nice to have access to the screen without removing it.