Dear Reverb Gamers: nope. I work in computer games, which makes it very easy to be out without consequence. It’s actually a career bonus to be a tabletop gamer, despite the fact that my day job is unrelated to game design. Even before I got into computer games, the Silicon Valley dot-com was a pretty friendly place for geeks of all stripes.
Even if I went into something more conservative, I’d still keep a D20 keychain ornament on my shoulder bag, though.