I can attest to the problem of getting in and out of a mommy bag in the hammock. When I first tried the bag in the hammock I didn't bother to unzip the bag on the side of the hammock I was exiting from. But instead, tryed scooting backwards out of it, and I ended up with my torso hanging half out of the hammock and my feet still in the mummy bag which was still partially in the hammock. Fellow campers (ground dwellers) were quite amused by my entanglement, but offered no assistance. I was given retribution when the heavens opened up that night and they and their earth bound tents were nearly washed off the mountain side.