Idk about all the theory's for mounts but, my ccw stays in my crossbread holster.... at 4 o'clock position cocked and locked. I don't want people seeing it unless I ever need it. Rifles, they go in my case in the back. Pistols though being concealed carry here is not worth having in a holster under my steering or between console and seat if I got pulled over for a tail light being out or something silly. Also, without being holstered safely and secure, any sort of accident could send it all over the vehicle or help bonk you on the head. Or he'll fly out a broken window and cause a not so needed much larger issue in court. However long trip or knowing I won't be out in more than an hour I suppose I do at least take out for comfort but is in console or glove box for privacy.
Kimber ultra raptor II 1911 as daily carry. Between my Sig P238 as summer carry and a large collection for range.