This sounds like a slightly abbreviated version of the plaid Erskine described in The Kilt and How to Wear It (c. 1901), and which I recreated here:
http://kiltmaker.blogspot.com/2008/0...ats-plaid.html

In his text, Erskine describes the plaid as being "two yards by two," which I interpret to mean a two yard length of double width cloth (72" x 54") but which could just as easily be a length of material 72" x 72". I have created, and worn, this style. I think in terms of looks it is far superior to the modern fly plaid. However, it is rather cumbersome, especially when made from heavy weight tartan. Eventually I ended up selling the one I made for myself.

I think this form of belted plaid would achieve a very similar look, but not be nearly as heavy and unweildy. Based on the photo and description OC Richard has provided, I should have enough information to create one. And I have been wondering what best to do with this 4 yard length of 29" wide New House Highland tartan I have lying around..... :-)