Too funny --- for the past several weeks I've been looking at the very same thing at our WallyWorld, and my wife keeps asking "Why do you need some big blanket? It's still summer!"
I really think it could be made to work well, perhaps using half rigged as an underquilt and the other half as an overquilt or just plain "blanket" as my wife would call it.
Guess we'll which which one of us jumps first . . .