It's a personal preference! To me, the "wrap around" on the rear end looks silly at best, and is impractical because its just more of the aluminum-looking trim that's hard to clean. I for one am glad its not on the factory offering.
Spend your hard-earned bucks on things that will increase the value of your SSR, such as subtle paint variations, sound system improvements, or performance enhancements. You'll be happier in the long run.