There's a youtube video out there [right here!
], where someone asks cosplayers, "What's their job?" and one of them happens to be a attorney. A job where your credibility is everything from the moment you walk in that court room and even before, it says something. If a cosplayer is willing to admit on film for the world to know that they are a attorney, then you should not be afraid.
In my experience, if you hang around enough conventions, you'll find some people with really respectable jobs like a dean at a college. Had I started when I was a teenager, I wouldn't have had the money to fund the R&D that went into my wings nor would have a mechanical engineer to consult.