I corresponded with the ProClip customer service team and they do not have a mount for the Bionic in production yet, but they did indicate that they would be producing one in the future. There is an adjustable mount that works well, either with the Verizon hard case and extended battery or without the case. If you email them, I am sure that they can tell you which of the adjustable mounts works.
You will have to dremel/drill out a spot for the power cable on the left side of the mount, but I did it and it looks and functions perfectly.
I have the OEM Car Dock, and purchased the Garmin Ball Mount (Item# 215165) from ProClip. The ball is the exact same size as the ball on the suction cup mount of the OEM Motorola Car Dock, so I just attached the Ball Mount to my Vehicle Mount from ProClip, and then attached the OEM Dock to the Ball Mount.