I have DuraTrac and KO's in those sizes. The DT for winter, the KO's the rest of the year. The difference in gas costs for me due to the MPG hit is about $150 per year. It would take 5-6 years to offset the tire cost with the MPG savings and by then the tires would be worn out. Revel in the pizza cutter goodness and don't sweat 1 MPG.
Thanks for the reply. I have decided to save my cash & not buy the Volks. Gonna' continue to run the 6 ply BFG KO2's (265/70/17) on my TRD OR wheels for the spring, summer & fall and the SL Duratracs 255/75/17 on the SR5 wheels in the winter.