I agree with the home defense application. If I had a shotgun, it would be my second choice (AR15) for home defense behind the shotgun, except for multiple armed intruders.
Then, my wife would "man" the shotgun, and I, the other. I don't know why it isn't touted for home defense more. It's nearly perfect.
I almost had a multiple intruder home invasion one day, that was thwarted by my wife. Won't go into specifics, but she did the right thing, by some quick verbal (and nasty) commands at the front door, before I was in range. Needless to say, it was scary, and it won't catch me off guard again, without necessary arms. I did have my sidearm on, but I knew it would be inadequate for this attempt. Everything is now accessible quickly, and we both talk to people through, and beside the closed door behind cover, until determined friend or foe. I don't know how I could have lived with myself if my wife was murdered, and I couldn't prevent it.
Plan of actions now in place. They should have been all along, but you never think something like this could happen to you. No more denial.