Both are great kilts in their own regard. The custom fit of a USA is great and the velcro is a lot more forgiving than 2" of travel on a leather strap. The weight of the USA poly viscose is less than the SWK and a lot less than a SWK heavy weight wool. It is winter now and a SWK heavy may just do the trick for the winter and give you time for the USA in the spring. O'Neille