I might also mention that this is the tartan worn by the Buchan Pipe Band our Clan Cumming Society, U.S.A. supports. Here is a quote from the history page of their site:

...wearing the Cumming Tartan, which is associated with the Buchan area.
If you click on this page of their site, http://www.buchanpipeband.com/history.shtml, and scroll down through it, you can see various photos of the band through the years.

So, there is another pipe and drum band that wears this very excellent tartan.