Oh, I can run a shotgun well, I just don't think they are a great choice in most situations due to the limitations I have mentioned.You should take one of his shotgun classes, then you will change your mind. Only SBR I would run in my house would be my 9mm Suppressed. My shotgun is still my first choice though and highly doubt there would a need to reload, most perps would try to bug out after the first shot (if they are still standing)
The only reaction I want to depend on from a bad guy in a self defense situation is that they die when properly engaged. Nothing else is reliably predictable.