(please see my first post) I am between the 12ga and the door to the bedroom - can't get to it without waking me. I sleep on my side with arm under pillow and can reach the headboard gun that's behind a second pillow without detectable movement, so if the BG actually makes it to the bedroom door, I play possum while retrieving it and BLAM. The gunvault gun is a back up to go back to when needed and is not accessible to the BG in the vault. For that one, the scenario is if I expend all ammo, I can throw the 12ga/carry at them and retreat back to the bedroom vault. I can get the vault open very likely in time to stick the gun in their gut and BLAM again a few more times. I have practiced these scenarios more than once.
May sound a little paranoid, which I use to think about those that had multiple guns available, but the more crap I hear about, the more I consider it being prepared.