I love this pattern. I would like to point out that it's easy to adjust. The pattern uses 6" squares, but I often use 7.5" if I'm in a hurry (fewer blocks to make). I cut the focus fabric at 8" (7.5" finished) and the striped blocks at 3" each (2.5" finished) or 2.5" for the sides and 3.5" for the middle, if you like a bigger middle strip.
If I sew the strips by width of fabric, I can get five 8" blocks out of a piece. It goes pretty quickly to make a lap-sized quilt or bigger.