Lately, I came across a site, by the name of Sock Dreams. http://www.sock-dreams.com

Mainly sells to the Goth crowd, but, the OTK socks work well as knee socks for men and can be used with Utilikilts, or, with trad. kilts, if solid color socks are purchased. I've been pretty happy with the purchases I've made... Since most of the socks are acrylic/cotton mix, they aren't as warm as kilt hose, but, work well.
-J