All these new textiles have me discussing with my seamstress, er, spouse about some new ideas. Trouble there...

Yes, I will positively confirm that my artillery blanket will not allow water to soak through the fabric so long as I put no holes in it. The lamination is a 100% water barrier. You have to physically damage it to make it leak, and since the weave is naturally hydrophillic, moisture deposited on the surface tends to stay at the surface, unless it is hydraulically forced into the weave, and even then it will want to migrate back to the surface once the pressure is removed.