When Seras is the guy, he doesn’t lose his top hat.
And here, the obligatory timeline-with-all-the-characters’-genders reversed:
F!Pip: Did you catch the lady Integra over there?
F!Pip: So she is a chick. At first I thought I was looking at a really hot guy. I mean, yuck!
M!Seras: Are you surprised that other Integras are ambiguously gendered?
M!Fundamental: Akado, let me borrow your coat!