I have the first gen Ultra naked since launch day paired with the Apple link bracelet. Watch is in perfect condition and the bracelet is scratched up where it touches table surfaces. It’s a tough cookie! The band doesn’t bother me because it’s just a watch.
I use a 15PM in natural naked. I just use a MagSafe pop socket on the back and a tempered glass screen protector. (Got the pop socket for $5 at TJ Maxx, good deal!) I can remove it for wireless charging etc. in a second and it protects the camera hump.