The way I see it, the vast majority of "orgasms" are faked. If a lady is seeing 4 guys a day, and works 4 days a week, that's 16 guys a week. I don't know about you guys, but in all my hobbying days, I think there was only one lady who didn't "orgasm", faked or genuine. Which means typically ladies are "orgasming" over and over again each week. It's well known that guys typically can orgasm more easily then women, and I don't think I could maintain 16 orgasms a week for any period of time. I'm not exactly an old fart either. Novelty is sexually exciting, but if you've commodified the act of sex and done it so often, I don't see how frequent orgasms would be a thing. I'm thinking only if the chemistry is good and the technique is unique and also very good. While I'm confident I have dished out several Os in my hobbying, I won't insult my own intelligence by saying it's fail proof.
Looks like the vote is being fairly realistic.
In the end, I'm not sure it matters. So long as the client can't tell the difference, it doesn't detract from the experience. Since he's the paying customer, that's what's important.