I've got a sample swatch book of their "reproduction" tartans they stock in a 12 oz weight. Have you contacted them? You could possibly get sample swatches sent out to you.

Just FYI, here are some other kilts I've made using Dalgleish cloth:
http://kilts.albanach.org/TODD2018.jpg
http://kilts.albanach.org/fgtartan.jpg
http://kilts.albanach.org/pic7_upon%20this%20rock.jpg
http://kilts.albanach.org/KiltSteps1.JPG
http://kilts.albanach.org/DSC01671.JPG