A number of iPhone keyboard cases have popped up lately, from the TK-421 flip-out case (which we reviewed) to the BoxWave Keyboard Buddy. We've spent the better part of 24 hours using an engineering sample of Nuu's MiniKey QWERTY slider for iPhone 4 -- expect "a few minor changes to be made" before actual launch -- that the company was kind enough to send over. So, how's it stack up?
