Meanwhile the sleeves are coming along apace!
I couldn't resist trying out the Koolhaas hat, but chose the wrong yarn for it (Karabella Aurora 8). The yarn is much too sproingy for the cable pattern. The pattern actually gave me fits, but I'm determined to make another one with a different yarn and a nicer cable holder.
Given my frustration with the Koolhaas hat, I thought a Zimmerman watch cap would be just the ticket. However, I discovered two things in making these. One, my cast-on style is much too tight. And two, I don't think I decreased correctly as these seem to resemble prophylactics more than hats ...
However, I did love the brioche stitch. I highly recommend it!