I finally took pictures to show off my Arch-Shaped Socks. I knit the fishbone cable & twisted rib version (there are about five others you can choose from the pattern, including several different ones with stranded colorwork and a knee-high Aran version I'm longing to knit) in Teeswater wool from Shaggy Bear Farm in Scio, Oregon (purchased via A Verb for Keeping Warm's Farm Series).
I'm just crazy about them. I wondered whether the twisted rib would be comfortable under the sole of the foot; I'm happy to report that it is indeed. I've worn these five or six times already. Thanks for a wonderful pattern, Meg!