I've read many a post about these weather covers, socks, pods etc.
Many have used materials laying around to make one...1.1, 1.7, 1.9, DWR (and not?) sil...you name it, someone has used it.
I've read about condensation issues and the like using "less" breathable materials (sil)
Well, I stumbled across 10+ yds of 1.1 ripstop at Walmart. I don't believe it is DWR treated.
Will this work for a weather sock? I question if 1.1 will have enough "substance" to effectively block the wind to gain the 10* to make it worth while
I'm interested in making a simple, functional sock for my BB. I want to cover top and bottom and I do not want to modify my BB (read - no velcro). I will still use a tarp for wet protection. I would like to keep weight to a minimum.

So, the main question is- will 1.1 non-treated give me the protection I want?

Ideas? Advice?