Do people use them, or is a bag preferable because the full enclosure holds in heat and seals out drafts?
I'm talking about 10 degrees and below temps, where you'd be using something like the Nunatak Expedition quilt rated to 5 degrees. The existence of the Expedition means some people must use quilts is those temps. (I'd MYOG my own this summer using the Thru-hiker kit)
I currently have a Nunatak Specialist I can push down to 15-20 with the insulation I'd be carrying for those temps anyways, so I need something for 15 and below, and as a warm sleeper, I generally overheat at more than 10 degrees above a bag/quilts rating, and venting only does so much.
I could then also layer the two for really cold temps.
I just wonder if a bag would be easier in this case.
Winter bags are tough because they're expensive and good for only one season, so I want to make the most educated choice the first time.