Tried searching for an answer but came up with early posts right after the puffy was first released. Now that it has been out a while, does anyone use their puffy in place of a rain jacket? I'll be in CO the 2nd week of Sept and was trying to shave a little weight by leaving my Core4 rain jacket at home. I figure if it comes up a downpour, I'll seek shelter under some pines with the puffy on. I like the idea of the puffy being a dual purpose item. Mainly trying to shave weight because I have some "luxury items" I'm thinking of bringing along.