I've also finished this first sock and gotten started on the cuff of its neighbor. Peter has commandeered these after all. They are the tiniest bit too loose on me and a little snug on him, though he denies it.
After way too much agonizing, I've decided I'd happily knit this addictive yarn forever, so I'm planning to order more of it to make myself a pair. I'll do contrasting ribbing out of some light blue tweedy leftovers so we can tell the finished socks apart more easily. If I'm really feeling crazy I might even be able to eek out a pair or two of tube socks from all of the leftovers. We will be the crazy family with matching socks and it will be so great!