Finally I bought an original sleep cover. But I am not quite happy with it: it does not work as a stand (I tried various position and various surfaces - it simply does not work here) and it has some tiny gap (backlash) on the right side. Only good thing is that its smart function works properly. May be I am too picky but I am continuing read this thread hoping to find something better. But reading your complains about Noreve cases I am feeling better and better about original cover.
