> A suit is the norm in DC for most industries,

Food service? Construction? I think a lot of folks are failing to include things like trades, services industries, etc.

Sure, most white collar interviews out east might require a suit.

> At my employer, arm or neck tattoos would be noticed, but probably not impact a developers job prospects.

This bums me out. I'm a software manager about to get full sleeve tattoos. You know what doesn't affect my ability to be a good software engineer or manager? My appearance. The fact that someone would say, "This person is great, except I don't like the way they look, so maybe let's not hire them" is truly awful, and I'd hope that at least someone on the hiring committee would push back hard.