Why a rack not the wall and why the shotgun if you're keeping it in said rack for quick deployment from concealment? If you are, why a not a handgun? This isn't a critique, just an honest questiion. I like to hear other peoples reasoning on stuff like this.
FQ13
If you are in bed the shotgun will be quick to access in that postition (providing it doesn't get tangled in anything).
Given the choice between a handgun and shotgun for home defense, I think I'll take the shotgun, hands down.
A setup like that doesn't look very difficult to duplicate for a lot less $$$$$.