Yes, this can be. It can be very ....challenging if two dominant characters have to deal with each other. But on the other hand, I never met two people, who are exactly the same and so it is with dominant characters too. And sometimes, rarely I would say, they can find something to give to each other, which nobody else can. But it keeps to be challenging. I experienced it once and it was a roller coaster, but wow and it only could happen, because our dominance had different outlines.
And yes on the other hand there are couples who switch smoothly in every direction.