I've spoken with Dommes about NDAs in the past when they have demanded personal information prior to meeting me (this is a hard limit for me and if it is a requirement, I just walk away).

In those discussions they have always brought up their willingness to sign one & it has always been about trying to make me feel better about turning over that information. Usually they have a template already because they "have done it before". To me that is pointless as trying to enforce & collect any remedy for violating the NDA would probably be worse than the disclosure itself.

Maybe look at some tyoe of written agreement or contract that lays out the commitments & responsibilities of both parties in the financial relationship rather than an NDA (which is only about disclosing certain information). It is still a written agreement between the two people that can have impact in a court case even if the idea of a "slave contract" itself isn't.