I am currently using the MSR E-wing tarp as my main shelter along with a bivy. I most say, not the best choice. Please, don't get me wrong, I have spent many of Colorado Rockies best thundestorms under this tarp, and have been comfortable and dry. But I just don't like it. Recently it went through 30 mph gusts and the seams next to the anchor points are starting to pull-out. I am even hesitant to use it again. The design is not my favorite. Only 2 ways to pitch. It might be good for a vestibule of some sort, but I am retiring and getting a new tarp. I am thinking of using the ewing's fabric to make some stuff sacks, but i don't know about chopping 80 dollars into little bits.
Thanks for your time and patience to read my post