I have started making one, since you brought it our attention. My 2.5" squares runneth over, so I've made 50 9patch blocks so far (need 71). Now I'm pondering what color to use for the solid... or colors. Did not buy EB's pattern and I don't feel bad about that since the pattern has been around a long time before she revived it. It's easy without a pattern and can be adapted to any size square you want to start with.
Thank you for the idea!