I bought this for use with a Manfrotto monopod for when I was visiting Yellowstone, it worked OK initially, the QR being a boon when switching between hand-held & supported shots. Changing between landscape & portrait was fairly easy, just by re-aligning the baseplate as per the markings on its underside. This meant I was regularly loosening & retightening the screw, which probably contributed to my point below.
The downside is the method Manfrotto have adopted for retaining the screw within the baseplate - rather than have the hole only slightly larger than the thread, they have opted to use a thin washer to support the circlip. On my model this deformed, was pulled through the plate and interfered with the locking mechanism, to the extent my camera fell to the ground when I was walking, fortunately on springy grass, so no damage was done.
I have now fitted a full thickness washer, but the base of the camera is now slightly proud of the rubber surface of the baseplate. I can (& will) machine the recess to take this thicker washer, but Manfrotto should have got the design right from the start - I suspect they have cut costs by using the same QR baseplate for larger diameter screws.