Say you are kinkster, out or not, who sees pro dommes, and you meet, either (vanilla) socially or through business, a pro domme you recognize from the scene. When, if ever, would it be appropriate to mention your own scene participation?

It's happened to me a couple of times and I haven't said anything. Those were both brief meetings. I also got to know over time one woman who revealed to me once that she was a very successful pro domme in her youth. Again, I didn't mention anything for a couple of reasons, one of which being that she has clearly moved on to other things in her life. I'm curious what others think, particularly pro dommes, for whom this must happen sometimes.