They languished for months, however. The last eight rows before decreasing for the toes took me about six weeks. I'd carry my knitting bag from place to place, then never work on the socks at all.
To knit two socks at once on one circular, first I had to carefully remove the project from my bag, then I had to untangle the two skeins from one another, then untangle them from the cables. Next I had to turn the work to find out where I'd left off. Knitting each side of the sock necessitated shifting the needles, then the cables, and often the yarn.
I don't suffer (much) from second sock syndrome, so I'm letting go of this technique.