If pictures are worth a thousand words, then the most noteworthy images in your literature are of very fit (borderline skinny) models wearing fashionable fitting outerwear. Well, that is how your garments fit.
I love the flip-it technology. That's a winner, but I and most of my friends are into outdoor sports like fishing, hunting, cross country skiing, radical hiking. These sports require reaching forward and back to the max, at times. I purchased my Quikflip to put over my upland bird hunting clothing and fishing gear for when the wind increases the chill factor in my particular environment du jour. It's great wind busting material. However, the back simply does not have enough "reach room" for these activities unless I size up to a 2XL. I normally wear a Large. You might consider a garment that is less of a fashion statement, employs action arms (more room at the elbow) and shoulder pleats or a middle of the back pleat, to give the back more room to reach. This would gain a better piece of that market share and offer a more functional garment designed for the real outdoors, because your idea is a winner. HGH