I looked it over, and read all the marketing hoopla behind it...and am left confused.
See here: http://www.sierradesigns.com/news.aspx?showarticle=371
It's supposed to only be used when RAIN starts to fall (this is the marketing's emphasis, not mine)...ok, isn't that what a rain jacket is for?
It's supposed to be part of a 3 piece system...windshell, puffy and rainjacket, and from the wording, it almost seems as if this rain jacket shouldn't be worn as a windjacket because
"this system effectively separates the windproof layer from the waterproof/breathable layer for enhanced, customizable performance in a wide range of conditions. Start with the Cloud Windshell when you're on the GO, add the Cloud Puffy when you STOP moving or temps drop, and break out the Cloud Airshell only when the RAIN starts to fall."
Huh? What happens if I break out the Cloud Airshell when the RAIN hasn't started to fall? Will I implode? Are you just trying to make me buy the windshell too? or is there really some reason why this rainshell can't also function as a windshell?
IMO, at the end of the day, if its just a traditional rainshell and only weighs 4oz, awesome! No need for all the other BS they are trying to spin.
Maybe me no have good reading comprehension skillz, but I don't understand how this this system that is supposed to be "revolutionizing the way people stay warm, dry and comfortable in the outdoors while simultaneously removing extra weight" is any different from traditional layering.