Rezo 20: The bag is indeed robust, but only so-so processed - who disturb protruding threads or asymmetrical seams, should rather keep looking. For the Sony RX100 (II) is the bag only partially suitable, because, although still just fits on the top and bottom, in width but is even the RX100II little too much space.
Rezo 30: What processing As naturally no difference to Rezo 20th
For RX100II this bag is padded a bit too narrow and too thin side, here I would have worried about the hot shoe, the RX100 would fit the width well.
Both camera models my bag would be somewhat too high as an inch of space (and compactness) is presented.
I decided ultimately for the Case Logic DCB302K.