I do have this ruler and the couple patterns that came with the ruler. I rather like it. I actually took a class at my LQS to learn how to use it. I am hoping to take a class by Jody Barrows, who came up with this idea, in September through my LQS again. I enjoyed the first class but need a little more practice with it too!
Just my opinion but I hope it helps!
:-) Kendra