I don't know how their kilts compare to SWK, as I don't have, and have not seen, an SWK. The name of the vendor is MacKinnon's kilts. Theyve been doing highland games for a while, and are in the process of getting into the online market. Their website (which is not up yet) is http://mackinnonsqualitykilts.com/

They are also on Myspace at http://www.myspace.com/mackinnonsqualitykilts