I've never done it and wouldn't, I'm far too cautious for something like that. Now I've had sex with him in public but not where I could be caught by other people that know me.
I work with someone who has. Our manager has a nice closed office with a window that overseas the parking lot and she's had sex in her office during employee 1 on 1s. She claims she had him fuck her against the window overseeing the company parking lot. She enjoys the nearly being caught and the risk factor involved in it almost as much as the big cock.