Maybe this could be usefull for someone here…
Sony just released a Lens and sensor module (with similar specs to the RX100II) that can clip on to a smartphone.
The module is lighter and cheaper than a RX100II.
So, if you are already carrying a smartphone and want the RX100II, then you can save some grams.
seen on:
http://www.dpreview.com/previews/sony-cybershot-dsc-qx100
Personally, i'd be annoyed by the bulkiness of the module + smartphone setup. Probably better for non-backpacking/wilderness vacation.
But i'll give kudos to Sony for experimenting, maybe it'll lead to something really smart…
/Peter

