Hey Iceman and Hab's!
Thought I would share my results. Bought a 3 rib slab package at Costco and used Iceman's Oinker Rub (still is my favorite) on all 3 racks.
Set UpRack 1: 4 hrs smoke @ 210, 14 hrs dry heat @ 210, apple juice spritz every 2 hrs, FTC 2 hrs, torch sear with BBQ sauce (found 1 jar of unopened Oinker Sauce in the back of the cabinet

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MAJOR SCORE!!!)
Rack 2: 4 hrs smoke - started at same time as Rack 1 (same cabinet), 16 hrs Sous Vide @ 160, torch sear with Oinker Sauce (Another favorite)
Rack 3: 16 hrs Sous Vide @ 160, 4 hrs smoke @ 210, torch sear with Oinker Sauce
ObservationsRack 1 - Needed a little more cooking time, not as moist as Sous Vide but stronger smoker flavor. Had more of a chew to it after I cooked it a bit more
Rack 2 - Fall off the bone tender - I prefer a little more chew - kids have braces and found this easier to chew
Rack 3 - Fall off the bone tender just like Rack 2 - found smoke flavor and smell to be a little stronger than Rack 2
ResultsRack 1 had better smoke flavor but it took more effort and time commitment and requires longer cooking time - with Sous Vide - set and forget until it is done
Rack 2 & 3 were easier for sore mouths due to recently tightened braces to chew (pulled off bone and then chewed) but I will reduce amount of cook time by 4 hrs next time and see how I like it
While Rack 2 was the easiest method, Rack 3 method had better results - not by much but still better
Bonus - saved bag juices from Sous Vide to make a ramen inspired noodle soup that was really good the next day
Rack 1 method if I have time is preferred but Rack 3 method (with time adjustment) is a more than acceptable contender when I can not dedicate the time
Rack 2 if I am in a bind or if I am going to travel to someone else's house, leave them sealed in the bag. Could even be cooled down and then sous vide reheated later - acceptable and better than nothing.