Having had the S4 with the S-View case for a while now, I cannot say how awesome I think flip covers/smart cases/etc. are. They're more convenient than they think, add a more professional look to the device, and offer some nice functionality. It also offers some protection on the screens against scratches, which is a plus. If Apple made a Smart cover/case for the iPhone, or even one like the HTC Dot case, Samsung S-View, or LG Circle Cover, would you buy one? I certainly would.