Made my experimental hammock and love it. See thread in my signature for details.
I just sent a message to someone asking about this. Which do they think is better. If I did this I would not use down between the layers but a synthetic instead. I'll wait on his response before I try either of them. I'll make the dual layer or buy the single layer double when the time comes. That time is coming fast though, the temps here have dropped quick and its 67 outside right now. Rather odd for this time of year. It seems as though we may just have a bad winter on our way in my area. CANT WAIT!!!!!