So I checked out the 500exc SM thread on SMJunkie. NOW I WANT ONE TOO! But as a city commuter? Probably not the best choice given that you measure the service intervals in hours. Seems like a fun but bad idea!
I've read the reviews and looked at the maintenance schedule, they're not as brutal as they sound but yes, they definitely require more service than a typical street bike.
I can live with that considering that it'll be my second street bike, It'll be used for the occasional track day/city runs. Won't be commuting with it.