@LukeAlmighty I do 2 all the time. A thin one that's really soft, and then a hefty one with holes in it (idk what else to call it, just the way it has been made) on top.
@LukeAlmightyTechnically two, but that's because I am a big guy and don't have a custom sized blanket that is long enough, so I have a smaller separate blanket for my feet. I am only covered by one though, so I voted one.
@LukeAlmighty Sleeping bag + 2 blankets.