I purchased the All Terrain Hybrid Shelter to use primarily as a hammock during a recent three day backpacking trip. To say I was impressed would be a gross understatement. The first night was very windy as a front was blowing through. The material that some knock the ATHS for as being too "crunchy" or "stiff" in comparison to the more trendy, parachute material hammocks is actually what makes it better than its competitors. The sealed, waterproof material kept the wind from cutting through the hammock and making me cold. I was also able to use the excess material to pull over myself and stay completely shielded from the elements. The second night was considerably colder, which none of us were particularly prepared for as it had not been forecasted before we left. A total of five of us were sleeping in hammocks. Two were in ENOs, two in Hennesseys, and me in my Grand Trunk ATHS. The two ENO sleepers abandoned their hammocks during the night and squeezed into tents with other members of our party due to the cold. The two Hennessey sleepers remained in their hammocks, but tried to insulate themselves with every piece of clothing they brought, but said they were still cold, miserable, and unable to sleep. I, again, pulled the excess material over myself and secured it in place using the loops connected to the material for other configurations and a carabiner. I slept wonderfully. My underside got a little cool, but not uncomfortably so. I do recall waking up at one point in the night and realizing I was not quite as warm as I had been earlier, but I never actually got cold. Protecting myself with the excess material also proved helpful when it started raining at about 4 am. I remained warm and dry. All of us who slept in hammocks had similar sleeping bags and slept in about the same amount of clothing, the difference really seemed to be the material of the ATHS.
I read reviews where people talked about the attached stiff sack treating away from the hammock, but don't let this detour you. If you fools it up and get the excess air out of the folds, like you would a tent or tarp, you'll have zero issues getting it in the stuff sack without tearing anything. This is not made of the same material as most other hammocks, so you cannot treat it like one when using the stuff sack.
This may not be the popular brand/style to buy and it may not be the most visually appealing (you can get it in any color you want, so long as it's navy blue), but the functionality of it leaves all others in the dust. The price tag comparable to that of an ENO Double Nest with functionality options you'd find in a much more expensive hammock/shelter system really sets the Grand Trunk All-Terrain Shelter above the rest.
This review was written in the old system and had content requirements that are different than reviews written today.