Good idea. Got mine. Mossberg 12-gauge. You can call it a supplemental home insurance policy.
Other than break open shotguns, there is definitely a learning curve. Not sure a newby who picks up a pump shotgun will be very successful without a little training and some practice for muscle memory.
Details on your recommendations for home defense? What ammo? Pump or semi-auto? Sling or not? Barrel length, magazine capacity? Manufacturer? Optics if any? Biometric safe, keypad safe, or a nice rack/corner in the bedroom?
Note: I have a Remington 870 with a comparatively cheap red dot sight that marks the center of impact at 10 yards, no sling, six 2 3/4" reduced recoil 00 buckshot, with the last round a magnum to make sure I notice it's my last, stored in a quick-open keypad safe that I practice opening in the dark, with 10 extra (magnum) rounds strapped to the stock.