Gave this a shot this evening after reading about it for awhile now. I will never cook a steak any other way. I started with three nice boneless ribeyes...
I gave them a generous dose of Alaea salt and granulated garlic and allowed them to warm to room temperature...
I got my Big Green Egg up to 250* and dropped a few small chunks of pecan on there before putting the steaks on with the plate setter for indirect heat. Once they reached 110* internal I pulled them and put them under foil while I got the BGE up to 650*. Once the BGE was ready I seared them for 60 seconds per side, dropped a pat of butter on them and foiled them for 10 minutes.
Best steak I've ever eaten. No grey meat at all, she's nice and pink right up to the crust.
Finished dinner up with some grilled peaches.