Looking for opinions on this particular topic. When going to the gym(let's say after work) and you are wearing your valued timepiece, would you rather lock it up in the car glovebox or in the gym locker?
In my scenario I would be going straight from work where I am already wearing my AP or similar when I get to the gym. Seems locked in locker is better scenario.
How secure is your gym locker and parking lot? Best never to leave valuables in the car but you can install a small safe mounted in your trunk. If you work out a lot have you considered switching to a wearable instead of your favorite AP? Something like the ATLAS:
I would strongly suggest hiding it in your car (glovebox or wherever) while you're still at work getting ready to leave. I 've had my wallet stolen from a gym locker and found out it is very easy to do. Someone will come in with bolt cutters and other equipment to open lockers in a gym bag, then slowly change as they scope you out for valuables, wallets, etc. Once you leave, chances are very good you won't be back for 30-60 minutes so they've got plenty of time to work at your locker.