Overall: This is a great product and I would recommend to a friend. Below I mention a few minor issues that I noticed in the two weeks I had my cover, none of which are show stoppers.
Performance: the cover does leak between the side rail and the inside surface of the truck bed, the cover does not extend beyond this seam and the water runs off the cover and right into the seam. It might work better if the cover extended beyond this seam. Also the velcro seal does hold water which later can freeze (Wisconsin winter) and makes it difficult to roll up (need to break the ice seal).
Quality: No complaints on the quality of the material of this cover
Appearance: The appearance is second to none, it makes my 2011 Silverado look first class.
Installation: The only issue I had with installation is the spacers did not stick to the spray in bedliner, although it was only 20 degrees out when I installed my cover. This could have contributed to the spacers not sticking. Because they did not stick I had to push them in place after the side rail was loosely clamped in place. This caused the rubber seal to "crunch" up.