Discretion & less well-known venues?
I know what Duckunderg is talking about. I have been outed by people at work that spotted me in Adelitas, Hong Kong and I myself spotted people at Chicago.
It really wasn't a big thing, because they are there too, but I could see how guy would like to keep their privacy especially if they are married, or have a job like a judge, cop or even a teacher.
It's it's really a concern stay away from AB, CC, and HK, but those are some of the better bars. I doubt anyone will spot you in Chavelas, Tropical, or Miami where more local tend to hang out, and fewer US mongers.
You can also go the escort route that will keep you away from the zona, and Revolution where a family may spot you.