They are very large, unwieldy, and somewhat difficult to aim in their current configuration. I could see it being good for property defense if I owned a shop which I thought may be the target of multiple armed robbers where firepower might be a significant factor. For the house, there is probably better. If I wanted a CZ "not a long gun" long gun, I would recommend the Scorpion for that (particularly with a sling, angled grip, and some kind of cheek rest)
http://cz-usa.com/product/cz-scorpion-evo-3-s1-pistol/
Of course, that doesn't keep me from wanting an 805 SBR badly
a configuration which I feel would be much more useful aside from the current legal standing of having too short a barrel