I don't get the sou vide for a steak at all. I really don't believe that more than 15 min of warming up from the fridge is necessary either. I don't want to throw a warm or even room temp steak on the grill, because when I cook steak I wait until my grill is 800+ deg (85,000 BTU 5 burners + rotisserie burner) and then put deep black grill marks on the outside for about 2 minutes per side (you don't want too many steaks on the grill, because you want to flip to an empty space), and then move it to the top rack for another 2 minutes. The outside is charred, and it is cooked evenly inside all the way to a line of cold red in the dead center. Technically this is rare, but if you do it right only a 1/8" in the middle is raw, and you have the whole range from well done on the surface to rare in the center. You just can't do it without commercial grade heat, and if you don't have enough heat you need to use an iron pan to get enough heat to put a real sear on it.
Really, warming up the meat to cook it what, 30 seconds faster? I think it would be harder to fully cook the outside and still have a rare center if it's already warm, though I admit I've never done it, because for the price of steak I know what I like and don't really care to experiment with it.
Those who boil steak think it's a pie filling.