If you can find the county statutes, and cannot find any provisions relating to Open Carry, you should be good to go. If you can't find the county statutes, then you need to find and check them before open carrying.
Oddly enough, you would think that the police would know what is legal and what isn't. But that does not seem to be true in practice. I would recommend looking things up for yourself. After all, if Mr. Allen is incorrect about it being legal, it's your butt in jail, not his.