First announced over a year ago at the 2013 CES, Incipio’s Cashwrap Mobile Wallet Case for iPhone 5/5s ($70) is finally available, at least for customers on the AT&T network. While the case is respectable enough in its own right — plastic and rubber, with button protection and an overall nice feel — it’s the payment options that are most intriguing. Cashwrap comes with a microSD card that allows for tap-to-pay functionality at NFC terminals,…