It takes only a few seconds to put the rack on or off, simple, quick and easy
Works well and is beautifully made. A pleasure to mount and use.
I've only put about 1000kms on my X Three and UD panniers - mostly on paved roads of various conditions - but am extremely satisfied with them in all respects. No vibrations or bouncing, super easy mounting and unmounting from the bike (the main reason I selected this setup), and a great sleek aesthetic.