"In the end, if a term goes into common usage, trying to expunge it is like "boltin' the barn door after the horse has already gotten out,""
Well, I'm not aiming to expunge it, I was more just curious about its origins. And you don't have to expunge a word for a more catchy term to catch on. I still like burrito/burro or hot dog, but would settle for Doona ;)
And I agree, Jardine's original design was indeed quilted, so the term seemed appropriate when applied to THAT item.
Anyhow, I'm a top-bag user (errrr, sleeping bag with an uninsulated bottom I mean) most of the time, so it really is academic! Although I've just received a new sleep system that is gonna be hard to name! I think it's a hoodless, zipperless, bottomless waterproof, windproof, baffled down sleeping bag that can also be used as a duvet :0