Totally! The K10D is all-but bulletproof (cross fingers). I have a camera bag, but there's a good chance the camera will be at the top of my backpack. Or the middle. Or occasionally the bottom. K10D has survived medium-speed meetings with concrete (battery door slightly cracked) and rain, and works fine. Also, I've found the more you *try* to protect something, the more likely it'll be scratched anyway.
Rear view screen has no protection and has obtained some light scratches but nothing that concerns me.