My Switronix QB plate does not provide a positive lock on my GMP batteries. It is quite easy to simply pull the battery right off the plate without pushing the release button. The release catch is a very smooth rounded piece of metal (of some kind), and only spring tension keeps it extended. So when upward force is applied to the battery (the GMP in this case), off the battery goes. In general it is not an issue, though in rough hand held or unpredictable circumstances, it could be a problem. No idea if the Red V mounts would do the same, but I suspect they would. I believe it is a design issue with the Switronix plate.
Could anyone else attempt to duplicate this? I would judge the amount of upward pressure required to release the battery from the plate without pushing the release button as little more than required to do so while pushing the release.