I am not a fan of hierarchy and so I would not do that no. Nor would I agree to be in a relationship in which my super important function was secondary to a fun day out with the spouse.
It is just too painful for me when I am emotionally invested, though it would not bother me in the slightest if I did not have romantic feelings for a person. So I suppose that is the line for me.
Personally (and I know loads would disagree) I don't think it is possible for the hierarchal situation you describe to last long unless the secondary in question is a) treating you in exactly the same way in exactly the same marital situation or b) Does not have very strong feelings for you and has a really busy lifestyle which makes emotional entanglements and lots of commitment difficult.