Personally, I am a listed dominant, However, I'm switch enough to want to be topped and I have been. Unfortunately, despite my sub desires I am naturally far too dominant to truly lose control. I tend to plan and top from the bottom. So, essentially dominant.

I don't believe any switch is ever 50/50. Usually there is a tendency towards one side, sometime only slightly, but usually. Perhaps this varies between partners, or towards whichever was the more formative BDSM experiance. Anyone agree/disagree?