Not to pick nits...
The Sony RX-100 is a really a Point & Shoot. Granted a VERY, VERY good P&S but a P&S just the same.
Also, as far as mirrorless is concerned, the Sony NEX line is excellent. I have a NEX-7 along with a number of lenses & it takes EXCELLENT photographs (especially with the Zeiss 24mm f1.8).
The Sony RX-100 is not a point & shoot. It can be used like a point & shoot, but unlike a point & shoot it has a 1in 20 megapixal sensor and can shoot raw and gives the photographer full control over focus and exposure just like a DSLR.