This was the progress of the grab bag sock as of New Year's morning.
I am happy to report that the first sock is done. I know the heather is stiffer upon knitting and softens up in the wash, as I have a pair of the heather with contrasting cuff, toe, and heel. With the double strand, it's about as tough as iron. I hope the softening will help, though I hope the iron-like quality will speak to the potential endurance.
The second sock has been cast on. I expect to have some time by the end of the week.