1) Booking through an agency is very impersonal. A first visit and screening is understandable, but if I know the girl and she knows me I want to deal and schedule with her...not a third party that adds to the scheduling confusion.
2) I was contacted by the girls I contacted prior to joining the agency. They let me know to schedule through you and I let them know that it would be unlikely for various reasons.
3) I'm not trying to book them so N/A
4) I don't care what you call yourself...you're in the middle and that makes me unlikely to book period. If I did I would not book again though the agent for repeats. Too much complication in my already complicated schedule.