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What's with this unisex thing?
Oh, here is a reference link regarding male/female walk article which also contains additional references, should you wish to pursue the topic.
http://www.ehow.com/...-men-women.html
First off, all but one of the sources for this article are more than ten years old. Second...I don't really understand what point you're trying to make? Yes, there is a masculine walk and a feminine walk, but those walks aren't exclusive to the genders people like to associate them with. In some sense, it actually proves my point: men and women are both capable of masculine and feminine posture. As the article cited, it has more to do with sexuality than anything.
Besides, there's more to stance and posture than masculine and feminine. Confident, demure, stuck-up, laid-back; there's so much more Bioware could do with their animations than conform to gender stereotypes.