Well let me start by saying that I too am a "switch". I do tend to lean more towards being a sub, but still a switch! I do love the feeling I get when dressed, I feel more connected with life. I don't think that I feel more of a sub because of being a crossdresser, I just truly enjoy it. Even if i wasn't a CD I still would be into BDSM! Part of it may be that I spent most of my life in the job world, where I had to be "in charge" Had to lead, had to be the boss. So now it's nice letting someone else make me do or act the way they want me too!
