One of the things I liked about touring in flatland 30 years ago on a long-wheelbase recumbent and B.O.B. trailer with giant rubbermaid box heat-formed to fit; Just open lid, toss down bag in loosely on top, close lid and go. No compression. Vent holes in underside of recessed handles would vent small moisture from just sleeping in bag.

Alas, now in hill country and riding a 20" folder, if I tour, it will require full compression of any bag I bring.