I think it's the smart thing for him to do. Especially considering who he works for.
And I'm pretty sure he's not going to try to play single out at the clubs. Every knows who he is, and the tabloids would be all over that of course!
My husband doesn't wear his band unless we're doing something formal. He works around machinery all day, so it's not really a big deal to me. I trust that he won't run around. I'm sure Kate feels the same.