Who ever a Ativ S had in hand, will have noted that it is also very light very slippery in the hand.
Man has always been afraid that it misses one of his hands, would ... shame about the expensive pieces.
With the protective cover there is significantly more stringent in the hand and you can put a bit rougher on the table.
Whether it but also cushion a fall to the ground, I can not (yet) say.
For the price you can not go far wrong, and the phone still looks chic.
In my pocket, it fits the way also with landscaped Cases ;-)