Sir Edward,
I would reconsider if I were you. In the Coast Guard, we had those same pictures posted everywhere in shops just like the Navy. I know exactly what Ian is talking about. One of my friends lost his whole finger because of his graduation ring getting caught. Needless to say, that was something I learned from other people's mistakes rather than learning myself.
My father, who worked as a constructional ironworker has never worn his wedding ring. He keeps it in a chest. He told me once when I asked him about it, "It's just a ring, symbolizing my marriage. I'm married, I love your mother, and I don't need a ring to remind me of my oath. My fingers, well, they do come in handy."
Two of the people I know here locally in the SCA have their wedding bands tattooed on their fingers. That's a cool safe way of doing it too.
