I just got back from the post office where I sent a pair of these off to Yarn Snob.
It's Bearfoot "Yellowstone," doubled to get the Sock of Doom gauge. I had to switch to black for the toe an inch sooner than I would've liked, but I think it still looks OK. When I got back from Chicago, I had a package of yarn sent by Yarn Snob's original assassin, but it was a self-patterning cotton Sockotta -- not good for the Sock of Doom pattern, so I dipped into my own stash for this, and I'll keep the Sockotta for Mom (she's told me that's her favorite).
Poor Yarn Snob. Here I am, still on vacation, with nothing but time on my hands to churn out a pair of socks. And damn...Bearfoot knits up really fast, especially doubled.
I peaked into the Sock War Spreadsheet, messaged the editor about Yarn Snob's new status, and she told me that this is one of the highest "kill" days so far.
Back into holding mode until I get the yarn for my next target.