I've had a SS with no protection since launch. I'm pretty hard on it but the screen is still perfect. However, body has taken a beating. Definitely very scratched up and a few dents (!).
However, I also don't care. It looks good with the scratches and dents. More character more like a "patina" that will grow over time.
It's still super shiny and no one else would notice all the scratches and dents.
I plan to wear mine hard and let the finish do what it's going to do. Long before the watch would look "beat up" I'll more than likely be replacing it anyway 🙂