The main reason for the purchase was first to get used to the Apple keyboard. The shortcuts that are mapped to the keyboard are definitely helpful. However, there are not many. Nevertheless helpful in seldom-used commands.
But the Super Silicone Keyboard Protector Skin as. Does not bother (in flip closed not) and the Macbook remains very well protected from coffee, dust and Co.
Even if the price is high therefore both thumbs up :)