I've finally got successful modifications to add a bit more room to the back of the Skew ankle (at the top of the heel). A lot of people have said (and this is my experience) that their Skews are comfortable once on, but hard to wiggle into. That's because the band at the back of the heel is biased with respect to the main sock fabric.
So here's what I did: On the 13th and 25th rounds after beginning the ankle gusset, I worked short rows 8 stitches long over the ankle band. (That's 4 stitches on either side of the second ankle marker for the left sock, but on either side of the first ankle marker for the right sock.) You can use any gap-closing method you like; I chose the Japanese method. This photo shows the heel of the left sock (toe is pointing upwards); can you find the short rows from the 13th round? I can, but they're pretty subtle in the handpainted yarn (Kitchen Sink Dyeworks Merino Fine, BTW).
Do be careful to make a conscious choice about increasing on the knit-side short rows. I only increased on the first pass (before the first turn, but not right after both turns) to keep the stitch counts correct. If you increase both before turning and after both turns, you will add one stitch to the back of the leg and one stitch to the heel per pair of short rows.
Oh, and I'll hide a little bit of exciting (to me, anyway) news at the end of this post: I've just received a test knitter's review of my next pattern! I expect to have it ready for publication no later than early April.