Am I in the wrong?
Just to be clear -
If you are married, you will always be in the wrong.....Get used to it.
As for holsters, most horizontal shoulder holsters aim the gun directly behind you. It's just what they do. Used them for ever. (don't stand behind me)
Your choice of caliber though-
That should be like your back-up-gun's back-up-gun's back-up-gun.....if you were a girl.......maybe.