Does anyone find sleeping with their partner in mated mummy bags uncomfortable? I've slept in mated rectangular bags, and a borrowed mummy bag separately, and they were fine. I've found a couple of mateable mummy bags that I'm interested in, but I'm not sure of investing to save space (they collapse down smaller than a queen-sized bag, and would presumably be warmer) if the experience is uncomfortable. I need to upgrade the rectangular bags, anyway, since they are tattered hand-me-downs by now.