It does seem to work quite effectively. You're right about being able to crop out the bottom, so that will be no issue. Although, now I suppose we should figure out on where to use it.
Those frames from Lee Thororgood's version looked a tad bit too blue for my taste. Do you mind testing the process on a scene where Lee Thorogood more radically shifted the color like maybe the sunset scene or the Death Star scenes; (I don't know specifics, I haven't seen it.)