Two things working to your advantage on the Sporty, lighter weight and sorties in the twisties wear the edges, which balances the straight up wear of touring, so mileage is strictly a matter of your agressive/sporting side verses you street/touring riding style, which in most cases is balanced so 10K to 15K is very reasonable to expect.
Rob or SledDog with their...eh...forward bent riding "Pro"-Active controlled high speed test facility styles...may drop that figure by half and how should I say, " --will replace their tires long before the nubbins on near the sideswalls wear out " or the compound suffer from UV/Ozone attacking or cracking the sidewalls...