If a guy is considering whether to book an agency girl, he can't ask the girl any questions. He can only ask the booker. So what questions should he ask? If he asks, does the girl provide GFE? The booker will almost always say yes. If he asks, does the girl have a nice body? The booker will almost always say yes. If you have never met the girl in person, there's always a risk that you won't like her no matter what questions you ask the booker.
Bookers are the salesman, and they are expert at it, will not name anyone but some bookers from some well known agencies took me for a ride a few times, is the girl GFE what service does she offer, the booker would say this is between you and the SP, that doesn't tell you much. Are the pics real, yes of course up to date, SP arrives at your place she is like 50 pounds bigger than the fake picture they posted.
I feel this is very childish behaviour from them, also the bat and switch, you book a girl on a site you seen her picture, the agency sends you a completely different girl. I book once and it took some time for the girl to get to my motel room, I went to get a drink when i came back the SP was knocking at my room door, she look nothing like the picture or girl i wanted, i said nothing and just turned back walk to my car and drove away. Paid the motel room but saved 220$ in the process.
Either way independent or agency its a business. SP are there for the money, yes some SP are genuine they love what they do, they love meeting and talking to new clients, and they will provide you with a great service, in agency and independent. But some are there for the easy money, they offer 0 in term of service are very mechanical, and service like that are the worse. And there is no money back guarantee, when you get those you often think about what the money could have been used for instead of wasting it on a bad service and a time that was cut short.