Warbaby, I'm just going to take a shot in the dark... When a man feels he's a submissive yet wonders if he may "secretly" be dominant (or a switch tending to dominance,) it's usually because of societal upbringing and gender roles.

Go with your first instincts. If you meet someone who draws you into a dominant role, that's different... but I suggest you don't confuse yourself with self doubts which may be based strictly in the traditional gender roles laid onto your psyche. Being a warbaby, you were raised in an era that resulted in an overly male dominating society.