This mirror business is a personal thing. I agree, it is perfectly possible to get in and out with the IVA mounts on the screen supports. However, I do find that I will open the passenger door completely to help my wife and daughters get in and out and to adjust their belts, so the ability to open the door 180 degrees can be helpful too. Driving a Seven with screen and no doors is just unpleasant at anything over 50 mph, so I don't feel the need to have mirrors other than those mounted on my doors. Of course, if you go aero, that is another story altogether Duncan