Not familiar with anybody else who weaves MacLachlan in weathered other than Lochcarron. Weathered colorway tartans seem to be one of their specialties that nobody else does to the same degree. You may be able to get the same tartan custom woven in a heavier weight if you contact the company directly, or check with DC Dalgleish who also does frequent custom weaves. However, no guarantees about what the color palette will look like with the customs, unless you specifically ask for thread samples in advance of ordering.

I love some of the weathered tartans---very distinctive. You might also consider the Muted MacLachlan available in 13oz from House of Edgar, as it is a somewhat similar non-Modern palette of the same tartan, again same pattern in different more, well, muted colors. Like Lochcarron with weathered versions, House of Edgar seems to specialize in their Muted versions.

Personally I own a few 13 oz 8yd kilts and the rest almost all 16 oz 8yd kilts. I do not own any 10 oz, and doubt that I would personally order one, as I feel that the 13 oz tartan is about as lightweight a fabric as I would want to try in a kilt. I do not like the 13 oz as much as the 16 oz---just not enough weight and substance for my preference, but some tartans are only avaialbe stock in specific wieghts, so you are either stuck with what you can get stock or have to go the custom weave route if you want heavier. I have three custom woven tartans, one in 13 from Dalgleish, one in 16 from Strathmore, and one in 16 from Dalgleish, all of which are superb quality materials that make fine kilts.

Good luck with your quest.

jeff