Should this really count as dual personas and genderswap? Technically, they are the same person, at least historically, and Saber, as we know her today, did come about when Saber (Fate/Prototype) was swapped to be female for the revamped Fate/Stay Night. But on the other hand, just being designed and conceptualized from the same cloth doesn't necessarily make you the same character. It's not like Kyonko, where a character is a direct derivative of an established character.