No that does clear up a lot. I can see how that amounts to more pieces, but less total sewing. I'll have to admit I 4 quilts and a nice sleeping bag and no plans to make a hiking quilt soon. The engineer in me just needs to know all of the answers.
On a side note I spent a good amount of time trying to think up a good way to sew a closed box style quilt. I could never come up with anything that wasn't a nightmire in stuffing, sewing, and overall hassle. This seems like it could be a good alternative and give the same result. Nice work.