I took a class from him at NQA, we made a 3 inch block that had more than 40 pieces in it. We used the ruler in class, but I prefer the Add a Quarter ruler. His was OK to work with the template material he sells, but didn't work as well with paper. But the patterns he does would probably fall apart if done on paper, none of the pieces were more than 1/2 inch wide.
Hope you enjoy the "George and Virginia Show" they do during class, playing jokes off each other the whole time.