I think given the choice, I would opt for a cheap pup tent as an emergency shelter. In my area, you need a floor and bug netting. This one sells for $18, weighs 3.4 pounds, but you could leave out the metal poles and stakes and make your own on site or hang it off a tree branch. Would get it down to about 2 pounds.

http://www.amazon.com/gp/product/B000P9E...ASIN=B000P9EZPW

I agree with Byrd_Hunter. Often the better option is the one that most often overlooked....and less expensive.

I have a small, cheap single man /12 dome tent that cost around $30.00 and I purchased it on sale for 1/2 price almost 4 years ago. This tent has turned out to be one of the better ROI I have made in recent years. For a cheap tent, it has held up markedly well with only a few stitches needed in a couple of stress points.

The tent weighs around 2-1/2 lbs with poles and goes with me on every hike where a bigger tent is not required.

Im talking flat out no tent using those primary. Also a 8x6 tarp Disappears in my pack. I dunno about the ounces and blah blah blah but What I do know for a definitive fact....I cant tell the difference if its in the pack or not, Which is what actually matters no? not the calculations and number crunching down to the ounces of what my pack may weight.