I’ve completed the leg and foot of the second sock and am ready for the unusual join. The leg is worked from the top down to the ankle; the foot is worked from the toe up to the ankle.
The the stitches are joined across the instep with–those of you who dislike Kitchener stitch, rejoice–a three-needle bind-off. I was a little skeptical about the comfort of the bind-off sts across the top of the instep, but when I tried on the sock, I couldn’t detect it.
All that’s left is the heel, which is worked in a wedge on the remaining stitches (like an afterthought or peasant heel), and some sort of finish for the cuffs. Stay tuned.