Yes, I have 4! I love them. I originally bought 2 one with the half inches slots and one that includes the 1/4 inch slots.
I wasn't paying attention and pressed hard on the edge of the ruler where it wasn't on the table and snapped it. I immediately went online and ordered a new one, (although the old one could still be used) and a larger one.
Today at a Sit n Sew, the woman next to me had one. She cut out binding for 5 quilts and let me use it to cut out borders for a wall hanging I was working on.
This is probably the best investment I have made since quilting besides my sewing machine, rotary cutter and mat!
Go for it!