I just did this update as well. Besides saving the crank nose it also stops the belt flop for the serpentine belt. I had a brand new tensioner and roller in mine and the belt was pretty sloppy, as soon as I put in the clutched pulley there is zero flop now and runs much smoother.
Um, does anyone else notice that the crank pully is wobbling. The clutched pully looks like a better option for the AAZ.