rdxb,
I already interviewed. My interviewer only had my resume and haven´t read my application. I think it is like that for everyone.
I would say that you should use the examples of your essays because they are looking for consistency. For example, in the essays they ask you for a major challenge and how you overcame it, I think that you should answer the situation of your essay.
They ask a lot of teamwork (how do you work in teams?, situation of a team that didn´t succeed?, what would your team say about you?... etc).