I fitted a DronExpert 2 D gimbal to my P2V. It was pretty easy to fit and has really made a difference to my video. See a short test here
[youtube]https://www.youtube.com/watch?v=xEsbsuOeG7Q[/youtube]
The only issue I have had is that after a gentle altercation with a tree ( I'm blaming the recent solar flares) the Phantom landed pretty heavily, no damage to the Quad but the gimbal support plate broke. I glued it back together with araldite and it all still works but I the guys at DronExpert said they will repair it using my electronics for about 45EU which I reckon is pretty good service.