I liked the two-toned look and the no-back-sweat aspect of the cloth seats but, back when I finalized (August, 2012), the cloth seats were missing key features that were only available with leather seats (a $1.5k option back then) - seat memory with the driver profiles and heated seats.
And, although my car was finally produced in January, 2013 at which point the heated, memory-clad cloth seats were available under the new pricing scheme ($2.5k more than 2012 orders), there was no going back as my car had entered production.
Given a chance today, I'd definitely take the vegan option. Not that I don't eat meat (and occasionally red meat too) but, the presumption or prevailing wisdom that leather-means-luxury is unfortunate.