All the templates are in the back of the book. On each design it will direct you to the templates which are marked with letters (XX, Z, etc.). If you transfer them to clear template material you can align them on an appropriate ruler and use your rotary cutter. You do, however, have to read the directions to find out how he or the person who designed the specific quilt suggest construction. If you are an experienced quilter quite often you will say ahhhh, I know a better way to piece this block.
I have all his books, and have taken a class from him and he definitely uses a rotary cutter.