I slept in it diagonally like you're suppposed to,er....laid down in it. Sleep was another matter entirely. I've found it a new home. Just didnt work for me. I liked the idea of it, its a pretty neat shelter. Just couldnt make it work out. As far as using a quilt or blanket, that might work fine in warmer weather, but a few 20 degree or less nights and thats right out the window.
The Kifaru paratipi I have works great, weighs about the same as the hammock or less, tons more room, and I even have a small woood stove for it.