I did for the "hotdog" test, but for this pork loin, I used my other Christmas present: My Foodsaver vacuum sealer. (My wife either loves me very much, or wants me to do more of the cooking.)
I'll try the towel trick. Funny you should mention the Kill-A-Watt. I have a couple of them. Great devices. I actually meant to use one on this last cook, but I just got caught up in other things and forgot to round it up. I definitely will on my next cook.
It would be interesting, for those of us who have them, to post Kill-A-Watt data for various cooking scenarios. Just a thought.