Not true,
If you have the newest version vision with the Hd-2d or HD-3d MC
YOU CAN USE THE HD MODEL GIMBALS.
Some members here have done this with success!
I personally never have tried, but I've seen several posts about it, and they
Said it works!
They told me you have to have a certain version MC ( main PC board inside phantom )
It actually has a plug on it that says ( "HD-3d gimbal ) you will need the cable
And I'm sure some PC ASSISTANT adjustments to get phantom and gimbal to work together!
I'm sure another member here will be happy to help
With the technical stuff!
Take care, Fly safe!