This is an interesting thread. I've always liked the weathered version of the Ferguson tartan. That is actually the new kilt I am looking into at the moment. While perusing the Clan Ferguson Society of North America website, I happened on something that struck me as odd. In the accepted tartans list, they have included the "Ferguson the Astronomer" (which I've always understood to be a non-clan tartan) and they have the weathered version listed as "Ferguson Weathered/Hunting".

I've considered writing someone at the society to ask why those two tartans are included that way? Maybe it's a matter of how our chief perceives them?