That would be the Safariland QLS mount “quick locking system”Here's a thought. Find some way, holster type, carry rig that the holster comes off fairly easily. At the beginning of the shift, the loaded pistol already in the holster goes on the rig. At the end of the shift, the holstered weapon comes off.
Not sure what this would entail for equiptment, but handling of loaded guns goes way down as does the bullet setback issue.