This is a really clever way of building a lot of strength into the waistband. How wide is the webbing you use? Does it follow the curve of the kilt pretty well? I'd imagine seatbelt webbing like you have in the photo would work well since it's pretty flexible compared to nylon or poly.

I've done basically the same thing before, but with regular canvas duck instead of webbing. With the fabrics I use and the way I construct my kilts I don't honestly believe it added much if any extra strength. I've thought about using webbing or 1000D cordura instead but hadn't considered seatbelt webbing since I prefer to use mil-spec materials whenever possible. I think it also would have been pushing my machine a little further than I'd like, with 8-10 layers of fabric+strap interfacing+velcro+webbing. I just shoehorned a walking foot machine into the sweatshop though, and it'd sew through all that without breaking a sweat. I guess I've got a good excuse to knock out a prototype. Or two. Or three.

Agreed about "too much fabric". I'm not sure what this "too much" thing is, but it's clearly a concept dreamed up by someone who doesn't sew. I think of it as my fabric cache.