I haven't OC'd, and I'm applying for the CC license at the end of the month, but I am very glad that Ohio has OC. For one, if my gun is printing during CC, I won't get in trouble for it. Also, if I'm doing something where I want to have my gun on me but CC isn't going to be an option, I don't have to leave my gun at home or locked in the car.
Last fall a friend of mine was walking his dog and bent over to pick up what the dog had left after doing it's business on a windy day, and his shirt rode up/blew up and exposed his gun. The woman across the street called the cops to report that a man was "walking around the neighborhood waving a gun." When the cop got to the neighborhood, he saw my friend - who he knew had a CCW, and fit the description of the guy she called about. The cop told my friend not to worry and went to this woman's house to explain to her that unless someone is walking around the neighborhood waving a gun around not to call the cops, that someone with a holstered gun be it open or concealed is legal.
I support both forms of carry, but those that think that OC is more dangerous are stupid, though at times it can be more of a headache when dealing with morons that are hoplophobes.