I just bought my first Hammock tent, a HH asym, and I tested it out in my garage using my sleeping system (Big anges bag with down air mattress inserted into the bag sleeve). I notice that it is very difficult to get the bag and mattress to lay in the assymetrically correct position. It slips and tends to fall into the midline of the tent. Overall, very awkward to get into and onto the sleeping system. I notice that these issues are not present when using a more traditional symetrical (TreeHugger) hammock.