No I don't have kankles but I couldn't resist taking a picture of the Marilinda sock heel. My model is out town so I had to resort to other measures. I stuffed the sock with a skein of Trekking hence the kankle.
This pattern makes me appreciate the genius that is Cookie A even more. From the 5 to 3 decrease worked into the center heel wrap stitch to the fabulous heel design the patterning of the sock is beautiful. Nothing beats a great knitting design that is also fun to execute.