This particular Log Cabin is done in single crochet with a size F needle. The stitch is tight, and as a result the drape is rather stiff, but it shows the colors (Rowan Cotton Glace) to great effect. I tried another swatch in half double crochet, and achieved much better drape, but the open stitches don't do justice to the colors. What do you think? Worse drape, better colors, or better drape and compromised colors? It's a real puzzle.
I'm making up my pattern as I go, based on the principles in the Mason Dixon Knitting book for a knit log cabin. I really do believe you can wing it.