lori, you are way out of date, down bags went the way of the dodo bird. down bags flattens way to easy and there fore has cold spots, when even a little damp it loses its insulation properties quickly, your need to check out the world of change.These new bags are warmer than down and much lighter in weight. And much smaller. Doubt it, check it out first and better yet try them.

One of the major players in the field of sleeping bags, one of many is Reflexcell, it ha one that is less then a pound for three seasons or 385 grams
For a package of 12 by 9 by just 3 inches, that can store inside your shirt.
The militaty calls them casualty blankets and they are standard for military personnel in every country that operates in high north climates. Most places they called Blizzard blankets. They also listed as biotactical tube tents, cost about $90. You can sleep directly on the snow with them.
Some have pull strings on top and bottom, they're in the survival gear pac's on every AH-64D that operates in northern climates. The army uses them because they work. The army does not use down sleeping bags.
Most of all down bags takes a lot of maintanence to stay in good shape. What you must remember is that the so called traditionalist means sticking to old rules that no longer apply. Like sticking to a horse when a car is available. Things have changed. I've talked to traditionalist to claim to have a down bag for years but only use them a few days a year. Try using a down bag everyday for a month and see what happens.