I took the survey.
Definitely think that it would be more functional if it didn't assume that a couple was "primary" and that all other partners are secondary.
While it does ask the question if you have two primary relationships, all of the other questions are specific to only ONE of your relationships.
Also, it asks if there's an agreement with your partner about overnights-which I have with one partner but not the other.
But then it asks all about how I deal with his overnights.
Well, he hasn't had any. I have but he hasn't-circumstantial. It does not ask how we deal with my overnights....
Hope that helps.