This revised version of SwitchEasy's VisionClip, called VisionClip 2 ($15) is a simple plastic holster that holds the iPhone 3G when it's inside either the CapsuleRebel or CapsuleNeo cases, protecting its face and -- according to the company, using a tinted plastic that allows "the user to see time and incoming call information without having to remove the iPhone from the holster." How exactly this works, we're not sure, since the holster's supposed…