Thanks Dennis.
I got a Commlite adapter today to test. It's about 1/4 the price of the Metabones and claims to do the same thing.
I put a 35mm L on it and did a handheld pan of about the same scene. Added them to the gallery for those interested.
Looks like the less expensive adapter works fine. Only problem is that the tripod standoff is not tight enough to hold the camera and lens without movement when mounted vertically with L bracket. Still worth keeping, I think, for handheld shooting.