I just bought the
MoKo ultra compact case from Amazon UK, and can report that there are 2 concealed magnets - one half way up the side to hold the flap closed, and one correctly positioned above the KA1's sleep/wake sensor.
The hinge is still a bit stiff so I can't be certain, but the KA1 stays awake when the flap's folded back.
So far so good...