Though we've been very open in the past about our dislike for flip-style iPhone cases, United SGP is trying to win us over to the dark side with its Leather Pouch Vintage Edition Flat for iPhone 4 ($46), a smaller version of its similarly-named case for the iPad. Using the same distressed brown suede exterior and a dark red fabric interior -- now with one of the company's oddball and virtually unreadable "Emerald Tablet of Heroes" inscriptions on…