I have tried wearing my watch both ways around for a period when I used to work offshore on oilrigs. Whilst on the inside of the wrist I did not have a breakage I found the watchglass got scratched a hell of a lot more. After replacing it twice as I could barely read it through the scratches I switched back to the outside of the wrist.
BTW I think we have another potential entry for the
thread or whatever it was called.
Crystals? WTF?!?
Never heard of that one before - in the UK I think people call it “watchglass” or just “the glass”.