I was at my local fabric store the other day, and I saw a table of clearanced out outerwear materials - almost like a vinyl, but more like the stuff you would make a windbreaker out of. Got me wondering.... can you use that as a hidden layer in an AIO dipe? Say I used MM fleece for the inner, a MF insert for the sewn-in part, the vinyl, and then something soft (like sherpa or minkee) on the outside. Would this work? Or would I be wasting my time/money?