As a certified Massage Practitioner and certified therapist I originally did alot of work in the sports medicine, fitness, and rehabilitation niche working with Physical therapists, Chiropractors as a rehabilitation therapist mostly on Navy seals and pilots. I was trained and certified in many forms of massage but my focus was primarily sports, deep tissue, and rehabilitation massages with mostly soldiers for several year's.
Then when I moved over into the Spa industry and started performing the more relaxing full body massages I can tell you stories that women are wild and be acting up trying to test you. I worked in the spa for another 6 years and I never did anything inappropriate but that doesn't mean inappropriate things weren't happening!
To be honest that type of sex work in that industry with licensed and certified individuals should be legal but it's not. Here is San Diego those vice police don't play and I have heard of them busting numerous people and shady establishments.
I have had numerous women have orgasms during the massage and I wasn't even doing anything inappropriate so just think how much more enjoyable it would have been for them if I took it all the way sensual!
To be honest because I had never did anything inappropriate during my years as a certified massage Practitioner and therapist it never crossed my mind to use it as an attraction in the lifestyle. I think it's because not enough women ever really expressed just how much they would love an erotic massage! I do have my own equipment and I am mobile but I have never seen much of a demand for it in the lifestyle.