Contribution - I did a "brain sex" test that can be found here. http://www.bbc.co.uk/science/humanbody/sex/index_cookie.shtml

My skill answers were predominately scored higher than both female and male.
My final score put me about 75% closer to the masculine side between  the two genders.
My preference for faces was strongly for femine faces.

On my fem side, I am stronger than the averages of females taking the test

On my masculine brain side I am stronger than the averages for males taking the test.

I have been referred to in the gay community as a "tweener" meaning I have strong attributes for both genders. It depends on mood and activity.

I enjoy both the company of men and women, however my social friendships are more predominate with men, as they are more interesting, curious and easy going.

Just thought I'd add this to the topic. I find it confirming that I can relate to both genders, though it is done differently.
It also could be revealing as to why I get along well with male Scorpio's and not so well with female Scorpio's.

My female friendships are closer, committed as a family member, and not as many.