I have a 2012 Muk 3 with the stock cranks, Nate on the back, and the stock rear wheel. I have no more/no less chain rub than when I had the Morph, and it really only happens when I'm in the small chain-ring up front and big cog in the rear.

With that said....I'd love to not have to worry about picking up so much junk into my drivetrain when in the small/large combo, it sounds awful when it happens!