There are two different kinds of androgyny, the one where the person comes off as having neither masculine nor feminine markers (think "Pat" on SNL) and the kind where they have a lot of both masculine and feminine markers.
For true androgyny, you're really looking at people who consider themselves third gender or two-spirit or genderqueer or genderfuck, and I definitely know people who settled on that as a place to stay, but most people I know who dabbled with actual androgyny ended up moving to some other identity. True androgyny is *exhausting*, because it is a very narrow target, and most people you interact with can't handle the ambiguity.
Then there's all the stuff which can get called androgynous -- like crossdressing or gender-bending -- where being in-between really isn't the goal, but it's where they end up being perceived. For example, studies show that observers weigh masculine markers more heavily than they do feminine markers when they are trying to decide on someone's gender. So a natal male wanting to appear feminine can have a hard time erasing enough masculine markers to make it all the way to feminine, and gets perceived as androgynous instead, even when that isn't the goal.
And I've known plenty of natal females who have been described as androgynous -- there's a particular kind of soft butch that hits that dividing line quite nicely.
And you know, I have one story I wrote with a first person narrator whose gender was never revealed. In it I had three different sex scenes. You can keep the androgyny up when the clothes are off, but you do have to work at it. (I think I had it posted around here somewhere. Let me check. ETA: They're all in this part
here if you're interested, starting almost halfway down. They're not really 'scenes' in the erotica sense -- I hadn't realized the genre this thread was in. More like encounters, each a paragraph long.)