I smoked this tri-tip until on my WSM 14.5 to 135 Degrees, then I allowed it to rest while I transferred the charcoal from my 14.5 WSM to my 18 inch Kettle Grill where I reversed seared the tri tip to finish it off.
Thanks! I figured I'd experiment a little. I could taste a very slight hint of it, I mixed in about 1 1/2 tsp of instant coffee and some brown sugar to the rub mixture and everyone seemed to enjoy it.