The locking mechanism on the case for those that are unfamiliar will prove frustrating at first. To open the case, look at the top of the case and there is a small switch that has to be pulled with your fingernail to the right. While holding this to the right, you then have to lift the front edge of the flap up. This can be quite tricky to do standing up and is much easier sat down where you can push the case into your lap.
The buttons on the case are metal sprung loaded plungers that activate the buttons on the camera within the case. When they are pushed and I am glad to report that all of the buttons on both the camera and case operate as intended without issue. Overall the quality of the case is good, although you will want to keep that glasses cleaning cloth handy as it is a bit of a fingerprint magnet.