I am confused by law versus good practice. If a gun is loaded in a car, in my mind it needs to be on my person, i.e. the standard of being under my control. My vehicles have gun safes, so I either am wearing the guns, they are in the safe, or the guns are unloaded, and I am in the vehicle protecting them from theft. For example, I might be going to the range or may have just purchased a gun or picked one up at the gunsmith, actual cases that come to mind.
This notion of routinely leaving a gun in a vehicle concerns me. When I go to a restaurant that serves alcohol, I put my loaded guns in the car safe. It has to come out and go back onto my person, not in the glove box or under the seat or any other scenario one might have seen on TV.
To make a gun accessible while in the car I use cross draw holsters or a shoulder holster or a fanny pack. In cold weather, clothing has everything to do with how one might carry a gun from a cramped seating position, seat belts and all.
The guns you mentioned will all work, as long as you provide adequate protection from theft and maintain legal control of them while driving.