That is a marketing tool BP providers use. They are open to light roleplay, light fetishes, and greek. I don't even pay attention to this term because it is unreliable when dealing with BP providers. They tell you one thing, and when you show up, it's another thing. They only want clients to call them, and they provide an average service.
Dealing with the BP scene, you can have a good time, you just have to know what to look for. But, this open term they use, it's a term they use to let clients know that they have other things on the menu, and are willing to try them. This one provider I've seen told me she uses this term, and guys call her up for foot fetishes and strap on play.