I am pretty much both. I used to be a night person because of my job. They used to schedule me late shifts all the time, which it didn't bother me. But then they started scheduling me mornings and I didn't like it. But I got used to it. Now I love mornings because then I get work out of the way and do stuff that I need to do afterwards. I hate doing stuff before I go to work. I much rather do it when I am off or after work.
But I love staying up. Usually I will stay up around 3am and if I need to be at work by 9am, I can get up. It isn't a big of a deal. As long I get out early, I don't care. Even if I am off. I get up around 9am or 10am anyway. Ever since I lost a lot of weight, I have a lot of energy. Even if I am tired, I just can't get myself to take a nap. My body won't let it.