Contemplating an ETP Hardcover Journal

I’ve been using my beloved Cachet Classic Graphic 9×12 Sketchbook a lot, and found myself wishing that it had some pre-printed ETP grids in it just now. I then thought…why not make them? I certainly would like one. During the next print run, I might have to arrange for a few custom ones to be made. I wonder if anyone else would be interested in one.