For use in our trailer, I love using real quality sheets. So much more comfy that the sleeping bag/Travasack thing.
I do understand though for folks like the OP, that if they need to tear down and completely remake the bed every day, sheets might be quite a pain, and a bag might be better.
BTW, our idea of making up the bed, is more like straightening it up. We just don't worry that it looks perfect, just that it sleeps so.