Well, that would work, but the idea is that it would just drape over me and I wouldn't have to worry about keeping it tucked under due to the chords. I use a quilt, so if it's cold enough that I want the momentum, I probably won't want the hassle of tucking both everytime I roll. It shouldn't really have to be any larger with the chord set up than it would be wrapping it, maybe and ounce or so heavier, but hopefully more convenient.
It's probably hard to visualize by my vague description.
Thanks for the idea though.