[DiapDealer]

In regard to viewing personally created KF8 files on the iPad:

If you want to preview personal AZW3/KF8 files (that you've created yourself) on an iPad, there's one--and only one--way to do so. You must use KindlePreviewer to create a special AZK file and then sideload it using iTunes.

All other ways (other than downloading a commercially prepared/sold KF8) result in you seeing a mobi-only conversion or the mobi-only portion of the dual-format kindlegen output.

In short: if you're not purchasing an AZW3/KF8 from Amazon, or creating an AZK with KindlePreviewer to sideload via iTunes.... you're seeing a plain-jane mobi on the iPad (regardless of what the file extension might be).