So its been cold. I've worn the coat. And it's really warm. REALLY warm. I don't notice the wind, the hood is insulated and warm. the pockets are comfortably lined and keep my hands warm enough that I dont need gloves. I think I could take it anywhere, to most conditions. It rained the other day and I was warm and dry and the coat didn't hold any moisture. So, it passed my tests.
My only complaint is that on the subway, I've had to shrug it off as I've been too warm, but I'm okay with that. :)

Bought this today. Tried on a zillion coats (northface, patagonia, isis) I had initially like the NorthFace metropolis parka, but then realized it wasn't waterproof. Tried on the NF waterproof version(arctic) with the fur hood. Very similar to this Chelsea coat. But even in the larger size, the NF felt very restrictive, heavy, and overbearing. Tried this marmot chelsea coat and instantly fell in love. I was in between a XS and S, but put a midweight fleece under it and sized up and went with the small. The exterior is soft to the touch, and the overall weight of the coat is extremely light. Pockets are warm and well placed, and the jacket hits just above the knee (I am 5'5, 120 lbs) The belt in back is flattering. The espresso color was fun with the orange lining, but I went for the black. Highly recommend this coat based on fit, weight, feel. Can't attest to its warmth, however just having it on to try it on, it was WARM. And finally, I really appreciate that marmot didn't go overboard like NF does and plaster logos all over. There is a discreet black on black logo on the cuff, and thats it.