Well Zobiegeddon and Zombie Gras... Body Collectors and Body Collectors.. but right I don't thik a highly visable IP has been a house and a scare zone.
Now I fully expect a walking dead scarezone outside of disaster. A SH SZ would be easy and would make since. I don't know the limitations of the agreement, but it makes since that if you paid for it.. you can use it.
At HHN17 they did make the big three cover up outside of the house. However, even if it is an issue, it would be easy to make a zombie theme (or a "monster in the fog" theme) and just not directly reference the IPs.
As stated before though a prison feel outside of disaster would be really neat. Maybe a prison court yard with barbed wire, seach light towers, and zombies. Call it zombie Riot, or lock down quarentine... etc.