It can be done.
Just plug the Gimbal into the Zenmuse port on the Vision's mainboard. The vision doesn't come with the cable though, so you need to find a replacement part for the 8 pin cable. Spare part nr. 3 (
http://www.floridauav.com/dji-phantom-2 ... part-no-3/)
Gimbal tilt also works like a charm.
The vision and phantom 2 are IDENTICAL in terms of electronics. The few differences are that the vision doesn't have a CAN bus module on the leg (you can buy a spare part also), it has 5.8ghz tx/rx and the 8 pin gimbal cable doesn't come with it.
I replaced my Vision's camera with a GoPro Hero 3+ and I'm using a 2.4 ghz FPV system by Lawmate (the FPV range exceeds the controller range, haha)