There will be slight scratches over time from swivelling back and forth, but yours look like grooves! Never seen before. I’d go back to the Boutique. Very sorry for you, but you seem to have received a full blown Monday morning watch... I’m sure JLC can set things straight for you!
Also depends on how long you supply energy, ie light to charge the lume. And bear in mind, your eyes adjust to a dark environment so readability is prolonged. The Polaris is among the better contenders out there. Enjoy it :o)