I just received an 8 yard kilt length of Armstrong ancient, about 13oz I think, and a 4yard double width piece of 16oz modern Morrison, made by Peter MacArthur, of Hamilton. (Pleater.)
It is really excellent material. I recently purchased an 8yd. length of Hunting Fraser and the quality is, IMHO, actually better than Lochcarron's Strome. I had seriously considered the Ancient Armstrong, but went with the Fraser because it is 16 oz. and a Government pattern. (#19 - Lovat Scouts.)

I just finished turning it into another MBP to the sett kilt, which turned out well. I still need to figure out how to reduce the length of time it takes to sort out the pleats. (Pics to follow.)