I use it on a Feisol 3372. Initially I had a significant amount of left to right away when everything was cranked down, which came from the panning feature, I remedied it by tightening 4 small screws on the bottom of the ballhead.
Using it as a direct mount using the RRS/ARCA plates, it just as low profile if not slightly lower than the leveling heads that are attached by the 3/8" screw such as the RRS TA-3, but with the added weight limit and nearly twice the angle adjustment. Which I admit is probably not needed, since anything more than 15 degrees could easily be attained by adjusting the leg angle or length; but its nice to have the ability to rapidly adjust the angle for multiple targets spread out over a large lateral and vertical area.
The quick release throw lever is a little hard to unlock as theres no grip on the lever, it is still considerably faster than the Hog Saddle, not as fast as the RRS throw lever, however.