I have been playing since I was 5 years old and my first job was when I was 12. I have made my living playing music ever since and I studied privately and with different tutors. I am a full fledged pro player in every respect and I never ever judged a player by the instrument they played. My pet peeve is It's not very pro when talking about someone's keyboard or instrument they are playing. I like a keyboard with built in speakers because I don't have to use monitors when playing on a theater stage or be at the mercy of some knot head that happens to be running a sound system that night. I know my balances are right when I feed a line to the main foh speakers and can turn my speakers up or down so I can hear myself. I also play some jobs in very small rooms and I don't have to bring speakers in to entertain. Some players who have never played or really ever heard an arranger keyboard think they are not pro have no idea what they are talking about. A motl model sometimes is a better tool for the job at hand. That does not mean that it's not "PRO".
Sorry for the rant. This is just my view.

MEL