Critter, do you have a finger rub test for everything?
Before I got my Titan, I shopped practically every SUV for my wife...I tested the Armada, QX56, Aviator/Navigator, MDX, GX470, Volvo XC. I think all of the 3rd rows seats were completely vinyl and many of the leather front seats were only leather trimmed, not true leather. I have a LE KC so vinyl rear seating is okay for me. I don't think I'd be happy if I got a LE CC with vinyl in the rear.
On some of these SUVs, you can easily tell the difference between the leather front and vinyl rear seats. Nissan did a good job on the Titan rear seats in my KC. Sure its vinyl, but only my kids sit back there.
Overall, I am pleased with the Titan's leather captain chairs. They are comfortable and look very nice. I do wish the arm rest had an adjustable locking mechanism though.