Love me some 12 ga. The Bullpup seems a natural for a Security/CQB 12 ga.
Cool! Bullpups are nice. One just needs to learn how to run them and not everyone has the ability or desire to learn.
As I age I find that the lack of muzzle mass helps a great deal in allowing me to swing and get on target faster. And of course they do that without paperwork, $200 tax stamp, and having it put in ATF jail.
Bullpup shotguns are cool, less arguements against them than with rifles.