Perhaps I misunderstand what Wolfchild is saying... but I think the point is that whatever your profession is, you're a professional at that; and if you ride a bike to get there, your an amateur cyclist.
Granted, there's an obvious exception if you're a professional cyclist and you wear cycling clothes while riding to a race, your cycling clothes are your work clothes.... but I don't think there's many professional cyclists on this subforum, though.
Philippe Gilbert is welcome to post in this subforum any time.