Huh.. I have no idea what's going on in the picture and I drew it..
The concept that we came up with is a bottomless APV holder that will be held in place by a clasping mechanism so that it will be able to be used without taking out the APV from the sleeve. Furthermore, it will be able to be holstered onto a belt but the APV sleeve portion of it will be able to be taken off of the holster without having to take it out of the sleeve portion. There is a U at the tank portion of the sleeve so that you can monitor the juice levels without having to slide the APV up and down the sleeve.
I think that description covers what we were going for. xD