I had one of these included in a Gregory backpack, used it once then replaced it with an old Camelbak reservoir.
It doesn't have a hose quick release, so very difficult to get in and out of the bag for refilling or for cleaning. It's very annoying to drag your bag full of gear around just to refill a water reservoir.
It's also missing a filler handle, just a plastic extension below the fill opening, so that when you are filling it and not making sure the bladder is completely vertical, the bladder folds up right against the opening and water spills out instead of going into the reservoir.
The 3D molding is nice but doesn't make up for the difficulty for filling it (which you will do a lot more often).