First, one can't speak out of turn here... especially if offering an opinion. Every perspective teaches us all.

And of course, all human activity falls on a continuum. There are no absolutes although we, as human beings, often try to create boundaries and differentiation with out definitions.

Now as to 'barely' submissive, I would contend that some feel just a little submissive until they meet the right dominant. When you get chemistry, sparks fly and your submission may well overwhelm you.

Likewise, a somewhat dominant personality may blossom into a full bored uber-dom (pardon the hyperbole) with the right submissive in his "clutches".