Printing Plate Shingles

[Cy]

I was reading one of Rob Roy's books and he mentioned using used printing plates as shingles. After a little research I turned up this article by Mother Earth News:

http://www.motherearthnews.com/Do-It-Yourself/1981-05-01/Shingle-Your-Roof-For-60-Dollars.aspx

As anyone ever tried this or know someone who has?

Cy