No scratches on mine and im not what you would call careful when sitting it down. I also have a tendency to spin the phone while it's sitting on a bar and that hasn't tone anything to the shell or the camera lens.
No damage to mine, but this phone is slippery. If I set it on the arm of my couch, it slides right off. I'd be more worried about that damaging the camera. I've already cracked my tempered glass because it fell off of my chair