The OH law enforcement culture is not all that gun friendly. My advice is that you best be 100% certain of what you're doing while in OH, and that that does not include getting advice from who knows who on the Internet. Here's a suggested authoritative source for you:
Ohio Attorney General Mike DeWine - 2011 Concealed Carry Laws Manual
Ohio Attorney General Mike DeWine - Concealed Carry Reciprocity Agreements
Ohio Attorney General Mike DeWine - 2011 Concealed Carry Laws Manual
Ohio Attorney General Mike DeWine - Concealed Carry Reciprocity Agreements