My first question is where do you live, where do you hunt and what seasons do you hunt???????
I live in Washington state and am in constant battle with the Cascade mountain ranges through the year starting in late March early April, hike, pack, scout and hunt into Oct. 90% of the time I won't leave camp without my one man full freestanding tent in my pack. The other 10% I have my fly and floor which can be setup as a single wall shelter (100% summer months). I have been backpacking for years (almost 40), have been caught in some pretty nasty weather even during the summer month of July. I have learned my lesson and feel like saving 1,2,3 lbs is not something to take out of your shelter. I too have looked at the lightweight option and every time it comes to max savings of 2.5lbs. Every time I just tell my self to stop eating cheeseburgers for a week drop 2lbs and get over it. I love the new stuff on the market as much as anyone and new gear is always nice to have. My experience and the part of the country, time of year and wilderness I spend time in tells me my shelter is not the place to save weight. Just my .02