Yeah, really interesting actually. A bit difficult separating factors, as usual, but, well. I used to think I had AS when I was younger because I'm so socially inhibited, but now I'm pretty sure I'm not.
My brother, on the other hand does have a diagnosis, and I do admit to sharing a lot of his features. I think he is probably an ENFJ - at least he's more E than I am, but that doesn't really say much... He did puzzle me a bit when I tried to type my family, so it's good to have some confirmation that I may very well be right about him being an NF.
I don't know to what extent it is 'my own' aspieness, or a result of growing up in a rather aspie-heavy environment, but I have definitely had a lot of the ambivalence/conflicts between a more rational and a more emotional side. In fact, it was only when I got into MBTI that it occurred to me how emotional I really was - something I had sort of repressed growing up.
I guess one thing to remember, as usual, is that there is a difference between preference and ability: I am very good at rational thought, but it is not my 'default mode', and I'm not very good at social interaction, but I wish I was because my mind is always centred on other people.