Our latest round-up of case offerings for the iPhone 4 turns up three very different offerings from three different companies. Case-Mate's Creatures lineup features colorful, cartoonish designs that turn users' iPhones into monsters and animals that appeal to both kids and fun-loving adults; Primary Case Company takes an efficiency tack with the Paradox Case that claims to be the "last" holster a smartphone owner needs to buy, and accessory design studio TwelveSouth has come up with the BookBook wallet and case that disguises itself as a small tome of the classical va
