Current belt item slot location interfere with your hands while your hands rest by your sides. This causes issues with HTC Vive atleast, non-stop haptic feedback draining the controller batteries.
I like having the haptic feedback on so i know I hit the slots and backbag while placing items so my suggestion for this would be to either adjust the slot locations.
Option 1 move the slots on sides further to the back, as if the items would be in your back pockets leaving the space on sides open for the controllers.
Option 2 is to allow players to have adjustable location for the slots, sliding along the belt, this could be done at the place where you change your looks for example.