Good question, and to be honest, I'm not really sure. I've never used a "kilt roll." To me, they seem impractical, but I suppose in a pinch, they could work as a cheap alternative to more expensive and larger types of luggage. I always use a large garment bag; the kind that can fold in half, zip up, has wheels and a telescopic handle for travel through the airport. This is the type of bag I use whenever I travel and need to bring Highland dress. My garment bag as all sorts of internal and external compartments too, which can be filled with Highland dress accessories if needed. The kilt lays flat inside the garment bag (with its wooden hanger still attached, so when I arrive at my destination, all I have to do is pull it out and it's ready to hang!) and is secured by padded, nylon straps. I put my jackets and waistcoats in there too and have never had a problem with wrinkling - even on the longer flights to Scotland.

Here's my garment bag from L.L. Bean that I swear by:
http://www.llbean.com/llb/shop/39072...ng-garment-bag

Cheers,