Speck's latest version of the iLounge-favorite ToughSkin case is specifically designed for use with Apple's iPhone. Pairing a single clear rubber shell with a detachable belt clip, ToughSkin for iPhone ($30) uses thicker, more rugged side grips than the company's standard SkinTight cases, and preserves the belt clip's ability to transform into a video viewing stand for the iPhone's widescreen iPod functionality. Holes are left for the screen, ear…