Because I'm basically a mean sort of guy, I can imagine a scammer client who "pays" guys like this with phony cryptocurrency.
I think everyone's heard enough from me about my take on findom and such, so I will just say this: if there are guys who can spare the money and really get into what this provider does, then more power to them both.
I do wonder just how much abuse and humiliation you could get by engaging both him and his partner. They could make a meme out of you or something.