There are two reasons I did not go with this type of holder.
1. Too much in between the antennas.
2. It leaves the antennas aimed more at the ground than up in the air.
From the manual.
If you shift the bracket just a bit to the right, you can get right stick working on the 5D.
I don't know why they call it 5D. Push is same as down (or was it up?)