Yes - I use it and am rather pleased.
What I do is when setting up I hang a *plumb-bob from the center columm then put a marker under it for the centering. Then turn the camera out on the adaptor and move the tripod to line marker up the focus box by looking thru the view finder. I may or may not remove the marker and shoot the patch. With the marker in place I've got a logo in the panorama
* Use a rubber chair leg protecter lined with a piece of elastic to get a snug fit with a hole in the bottom center, a piece of waxed cord thru the hole to which the plumb-bob is tied. The cord moves the plumb-bob up and down as needed. Its held in place by the snug fiot of the eleastic lines protector to the center column