I don't know, I feel like because the nature of the job isn't that of an escort, it shouldn't be expected that the masseur will be aroused during an erotic massage. We are human, after all. To me, erotic goes beyond gently touching certain areas, it is more interactive, but doesn't necessarily have to involve the masseur getting hard. It could involve fingers, body contact, simulation, but I wouldn't fault a masseur for offering erotic and not popping a boner. An escort not popping a boner however, whose job it is to penetrate (if hired in an active role) would be an issue for me. But even then, I would still understand to a certain extent that some level of attraction (or Viagra) needs to be involved.