C.E.O. Premiere+ ($40) is an update to Marware's C.E.O. Premiere belt-mounted leather case design, adding a second component -- a thin smoke black clear hard plastic shell that covers the back of the iPhone 3G or 3GS inside, adding protection in the event that you want to remove the phone from the Velcro-sealed hip pouch. We've never found the pouch genre of cases to be particularly appealing, but Marware's solution at least makes a practical concession…