I have a friend who is a Dean and he is looking for a kilt in the Davidson of Tulloch tartan. I don't think the Davidson tartan is a special weave. I'm curious as to who you are looking at when you say casual kiltmaker. If you are looking at kilts that are not wool, then I doubt you will find it. I don't think Marton Mills weaves Poly/Viscose in the Davidson tartan.