Spence,
All of what you say is right on. I will take a wild guess and say that the potential dealer you are trying to bring up to snuff is, very personable, pleasant, neat in appearance...etc., etc,. or you wouldn't be giving him extra time. I always tell my students, when the time comes for their audition, there is no such thing as overdressing.
I also tell them that they can not be discriminated against for color, gender, or age, to name a few. However, if they walk into an audition chewing gum, or smelling like an ashtray, or have a tattoo of a swastika on their forehead...they probably won't get hired.