I had it in an MD-10 a week or so ago. We played with it but did not officially "use" it. I.e., paper LIDO was out at all times. Pretty nice IMHO. I had forgotten everything in the CBT about EFB and never looked at the DVD but it was very intuitive to set up and use. The sync and send functions are pretty nice. The trick seems to be using your fingernail vice fingerpad to drag and select. The day/night feature works well too. Overall, much better than paper LIDO.