My good friend did something similar with his Glock. He took a factory Glock holster and used heavy-duty velcro and put it right between the center console and seat side. It limits you to only using a Glock, but it is a natural holster and draw movement.
very primative. iwb holster just clipped under console lid. i will be adding something a little more "fixed" and better for draw. sorry im trying to get a pic to load from my phone and having trouble. i will keep trying.