This is surely an interesting thread.
The only way I can describe being a switch is that of someone who chooses love regardless of gender. They don't identify as gay/lesbian, straight or even bi for that matter. They identify with people are people, and certain people make them want to fall in love regardless of gender.
For me, there are some people who have completely beckoned my submission. And others, my dominance. It's really as simple as that. I've never switched with the same person as it tends to be one or the other for me. I lean more to the submissive side generally, but as a submissive... I don't much identify with heavier masochism. However, my dominant mind is quite sadistic. Just tossing another layer of confusion
I'm a fairly middle of the road type person as well, and perhaps that's why I lean both ways in this regard. I sort of don't understand what IS so difficult to understand about being a switch? Hopefully we've all helped explain it a bit better.
Like was pointed out, there's few submissives who would declare everyone beckons their submissive side. Just because you may not act out dominance in a sexual or d/s fashion is not necessarily relevant, imo. You're still not submissive around certain people. It's the same really. We've just added an intimate layer.