This was on a motorcycle forum. Some of them seem to think this is a great idea. One of the guys suggested I move "North to Ohio" as their laws are so friendly.
..to the point of if you're going to point it at someone, use it, with a 12ga you can get many 'specialty' self defense and 'less than lethal' rounds to get your point across before having that issue of taking someones life
with a nice 5rd box mag like on the saiga could put beanbag or rubber baton as first slug, maybe some rocksalt or other 'mildly penatrative' round for the next two in case they don't get the idea, then load the last two shots with 'serious business' of your choice (00, slug, whatever)
thats my basic plan for it when i get one for home defense and with it being an autoloader, easy enough to squeeze out the force escalation as fast as you need it