I have two kilts in my two family tartans from Strathmore, 13 oz Forrester Modern and 16oz Forrester Hunting Modern (review to come in the next day or so). The fabrics are fabulous, in my opinion comparable to either Lochcarron or HoE (as I have other kilts in Lochcarron 16 and HoE 13 and 16 oz tartans) and to a custom 16oz Dalgleish I had made up some time ago. A notch above Marton Mills Jura, which is the other 16 oz I have. Strathmore has an excellent hand and finish and good kilting selvedge. As I do not sew I can not speak to its "sewability" characteristics, but it has lovely deep colors and so far has worn well without pilling or other issues. Hope this helps.

Addend.: I have a few pieces left over from the recent 16oz handsewn I just got, and can send you a pice if you would like to feel the 16 oz. I don't have any 13oz scraps, unfortunately. PM if interested.