Somewhat along the lines of another post up here, I move between the EU and the US a few times a year.... I also present very androgynously, even though I've been on HRT for 3 years and am just recovering from SRS.... In the EU, there is a lot of neutrality, and I'm almost always not gendered either way to my knowledge. In the US, however, I get a heap of ma'ams even if I'm not trying at all. I also get a heap of sirs, but neither bother me... Cultural differences, language differences, or just one group better at clocking than the other...