I myself have participated in girl-on-girl shows for men that would ask for it, of which were very, very many. It is a popular request, especially at bachelor parties. It also paid a much higher dividend. Also when I worked the escort services, certain male/female clients would call and ask for a male/male team and the escort services that I worked for provided this specific request.
It's the same world, and only separated by what you physically see. Just because you do not see a male sex worker trying to sell himself on the strip or in the casino, doesn't mean he has not participated on the down low.
Prostitutes have feelings; they are very human. They hurt, bleed cry and laugh just like you and me. To the people that want to legalize prostitution: Let me ask you a question. If you want to legalize it, would you now let your daughter/niece/grand daughter/sister do this? Why not sign them up for what you want legalized? And if not, WHY not? Does it make them too human for you now?
It is not as common as female/male prostitution, but yes my friends and I had female clients. But this is a request that most girls are not willing to do. No, we never saw it as anything different, because if ladies were paying for an escort, they were still considered our clients, and they were treated as such.