I have used SRAM, KMC, and Wippermann Connex connector links in the past with no real installation issues. Nevertheless I recently purchased a Park Tool MLP-1.2 Master Link Pliers which made installation and removal of KMC links an order of magnitude easier. The recent purchase of a Dura-Ace 11-speed chain came with this new Shimano Quick Link instead of the usual pin. I dutifully tried to use the pliers (which work in both directions for installation and removal) to seat the link after partially engaging it. The link would not seat no matter how much pressure I applied to snap it into place. A call to my LBS suggested standing on the pedals and applying pressure. Before trying that, I took needle nose pliers and gently squeezed the outside of the plates to push them inward before trying the MLP-1.2 again. THAT WORKED! The link snapped into place and has worked flawlessly while riding. Ease of removal is TBD.