I think Steve has said what I was thinking. Many of us with EQ6s sitting on a pier probably have a hell of a lot more trouble with backlash and PE than movement from the pier. I suspect even a stable tripod has minimal influence on the final result when you still have mount issues to guide out.
For those with permanent observatories and PME/AP mounts, MIGHT be worth considering, but really, if you rpier is isolated from floor vibrations do you really think vibration from the mount motors is going to resonate that badly?
