Drafts can be a valid complaint about quilts. I think that the problem often stems from choosing too narrow a quilt to allow effective tuck in for movement inside the quilt without drafts.

Nun: I actually also use a Montbell Thermal Sheet as my very warm weather summer quilt or travel quilt with the hoodless bag unzipped to the point of making a foot pocket at the bottom. Works quite well above 40F, weighs 12 oz and packs very small. Fine quality as well as you know.