...I always leash my cameras whether I'm on or under the water, on the mountain or hang gliding. Always have with small gear at risk going back years, things will fall off at times. Have hundreds of gigabytes of great imagery as a result. Which of the dozens of mounts have you had problems with and do you leash your camera?
The leash has saved me countless times as well.
I've broken at least 3 of the short black mounts when clicked into a surf board mount (twice) or snowboard (once). If you are cruising, it's fine. Any kind of extended vibration or hard landings and they snap. Pretty sure I've broken more than three, though. I feel like they need a hard rubber relieve link in there somewhere. Just before the plastic would have broken, the hard rubber piece would bend and save your mount.