one of three things, depending on who you’re talking to - either they’d use it with some awkwardness at first, but after repeated use it’d get easier. Or they’d default to they/them (ideally) or gendered pronouns based on your appearance. (much less ideally)

But this type of thing isn’t something people commonly do, even among those who use neopronouns, and doesn’t make much sense as a gender identity, so the convincing would be the hard part.