I've had one for a few years, but never really thought of it for defense. I did shoot a trap course with mine once, but that's a different story.
Is yours the shoulder stock or the weird pistol version?
Mine's the pistol version.
In any case just get some buckshot rounds for it, they'll do the job in the case of a single intruder situation. I'd still have another weapon close by in case of multiple attackers, trying to reload those things quickly isn't easy.