Important in the RX100 MK1: The camera flies around in his pocket. So it pays to bolster the case for reinzubekommen here stability.
I had caught the bag in the Maldives while snorkeling with corals and fish and I could numerous.
Thanks to the good camera sometimes really good pictures got out.
For me video the steady hand is missing. Unfortunately, the look as if I grade a shark in the lack .. pretty shaky :)
Overall I would recommend the product. One just needs very careful and close the bag very well. Register here for the manual procedure (underwater shake the bag).