Yes, in fact the one "PV" one is actually 65% viscose and 35% acetate! The wool one has got a lining and there is a stabilizer, from the buckles back and around to the other side buckle. The cotton and "PV" ones have interfacing all around the waistband.

I see what you mean, and the next time a new kilt is added to the wardrobe I am going to have a close look and see if I am brave enough to follow your method. Thanks again!