I don't think it's essential, even on a scratch you can polish to fix, just like a regular watch.
The exception are something like bezel dents, as @akira_jp highlighted on his last image. I had a samsung galaxy fit that after a while got a few marks on the side, but wasn't worth covering with a case.
But as I intend to use the bangle on a day-to-day basis, not just for sports, I'm trying to take as many precautions as I can without raising issues.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I don't think it's essential, even on a scratch you can polish to fix, just like a regular watch.
The exception are something like bezel dents, as @akira_jp highlighted on his last image. I had a samsung galaxy fit that after a while got a few marks on the side, but wasn't worth covering with a case.
But as I intend to use the bangle on a day-to-day basis, not just for sports, I'm trying to take as many precautions as I can without raising issues.