S of F is worn by the Pipes and Drums of the 48th Highlanders of Canada. The regiment itself wears Davidson, after their first Colonel, who raised them in 1891. See the website at http://regimentalpipers.com/48pd/facts/tartans.htmlt

It is the only place I've ever seen that particular tartan (S&F) and I've no idea how they chose it. The website a bit coy on this.
Burnett's and Struth do their kilt and uniform work I believe.

Top notch pipe band by the way. I understand that they practice 6 days a week.