Made from Napa leather, the Slip Hard Leather Case ($20) uses a design we've previously noted we didn't like much when it was being sold by other companies: it's basically just a piece of leather wrapped around a cup that happens to fit the iPhone. On a positive note, it looks pretty nice and covers the iPhone in a way that Apple or other companies might sell for up to $100; the flip side is that it precludes any iPhone access unless you fully remove…
