The first point of criticism. If you put an NFC-banking card into the case and folds back, takes Android this and tries to read the data via app. This can be annoying, especially if NFC is switched on permanently.
Second complaint: The volume can not be controlled without opening the case, because the buttons are mounted at the Nexus left on the device. But speakers can be connected without any problems. I could manage me so, so that the volume control.