Speaking of butt plugs, I have high quality surgical steel style plugs and a wand type of thing. Would it be uncool to even ask a working girl if I could bring em along to use on her? I get it may be different for everyone but if there's an overwhelming "what are you thinking" response I'll never think of this again haha
Honestly here are my 2 cents.. maybe if a provider offers Greek/PSE, but I can't guarantee the person will accept.. Many of us already have our own toys as well and I think some SP would not feel comfortable with you bringing a personal toy that's not in the box for hygiene reasons...
As for a butt plug.. I've used them on occasion with clients but it's rare and it was with regular clients sometimes who didn't book me for a long period of time. I use the smallest size. It's really not my favorite thing. If a client who read my ad asked to use their own butt plug on me I'd say no, definitely.
It doesn't hurt to ask but if it's a deal breaker if she says no I would not waste her time..