Mike,
I doubt if any jacket on Earth meets your description. The conflicting requirements are 'quiet', 'packable', and 'down'. Certainly there are shells which are less noisy, but a packable down garment almost automatically means some form of nylon or similar fabric. I basically only wear a down garment under my final outer layer...never as a final outer piece itself. Some of my favs for deer hunting are the Patagonia Nano Puff, Cabela's Down Vest, and my extremely warm Feathered Friends Helios Vest. I usually don't wear a full jacket, preferring a vest which is quieter during movement. Top it with a fleece or wool outer layer...all you need to do is be a bit cautious with movement when deer are close.
BTW: I'm interested in the KUIU Super Down, but recently cancelled an order for one. The jacket has only 2.5 ounces of down (good 850 down) including the hood. By contrast, my FF Helios vest has 4.8 ounces (or more) of 850 down in a garment weighing an average 11 ounces. The down is concentrated over my body core where I prefer it. A typical medium-wt premium down jacket will have from 4.5 to 6.5 ounces of 750-850 goose down. My experience tells me I need more than 2.5 ounces to really add the warmth I'm wanting.