In the interest of time, I'll spare you, dear readers, my usual spiel and say simply this: I like official accessories. In theory, anyway. I like the idea of accessories specifically made for specific devices by the device's original manufacturer. I've been delighted by the Nexus 7 pogo dock, and love the Nexus 10 pogo charger (though it isn't actually official yet).
Then there's the official book cover for the Nexus 10. We first saw this cover when the Nexus 10 was announced, and then it vanished into thin air for nearly six months before making a sudden appearance in the Play Store.