would being jeanie for work be outside bj's comfort zone? is it just for fun and for himself? i am sure there are clients who would want Jeanie
Yes and no. There would be different versions of Jeanie, just like there are different versions of BJ (and I suppose, really, most people have different personas for different environments). BJ likes leaving his work at the door, you know. Once he's off the clock, he likes to be off the clock, and having a strong separate persona for work, especially sex work, helps him work and helps him relax after work.
So sex worker Jeanie vs. dancer Jeanie vs. casual just-for-himself Jeanie would all look and behave differently and I don't think BJ would necessarily consider them the "same" Jeanie. Each would have different backstories in his head that help give them their own personality, depending on what he needs from them, and each would dress a little differently. Exaggerations, I guess. Sex worker Jeanie is more at ease with sex and her body than BJ is and isn't as afraid to hold boundaries, dancer Jeanie is confident and isn't afraid to get a little theatric and vulnerable in front of a crowd, and casual Jeanie is a bit less flashy and everything BJ wishes he could be if he could go back in time and rescue himself sooner, or was born completely differently. Jeanie, no matter which Jeanie it is, is the embodiment of self-love for BJ, and the kind of person he'd like to be.
Is she how BJ sees himself inside? Not quite, I think his vision of his "real self" is a lot more abstract, but Jeanie is completely detached from Barry James and all the baggage he carries, and she's a lot closer to his vision than not.
That said, I do think Jeanie would be born either after a client requests that BJ dress in drag, or slowly on its own with BJ giving in to a desire to experiment and a friend complimenting or encouraging him. I'm softest about the latter, but that can happen regardless. I think it'd be most fun to make the reason different for each verse because the point isn't really how she's created, but that at some point, Jeanie will exist because she makes BJ so happy.
But TL;DR, Jeanie for work would not be out of his comfort zone as long as Working Jeanie can still be separate from At Home Jeanie. There would be some days where I think he wouldn't be able to be Jeanie at work, because a part of him does want to keep her "safe" from the bad memories sex work can dredge up and he doesn't want to accidentally start relating her to those, but on the flip side, he'd also prefer being Jeanie at work. She's "better" at it, he says.