I've just rented the RX1 for 'testing' for the next two weeks. I have a RX100 and the UI is pretty much the same. The RX100 is a 1/5 of the cost of the RX1 and you've got a decent zoom range. While the RX1 is really incredible I feel it is grossly overpriced for the moment.
Given there is little to compete against it now, I suspect competition will drive this price down significantly in the next year.
The RX1 has a great feel, is very fast and solid. A zoom range on this camera would be the only initial request I would ask at this point to send it to my wish list.
I'll try to post some images in the next few days from the RX1 and my RX100 for comparison.
As far as where this camera fits in my photographic life, it doesn't really replace my 5D3 and its a bit big for a P&S. The RX100 is about the biggest P&S POCKETABLE camera I feel comfortable with.
More to follow later as I get time to shoot with the RX1.
5D3, 1D4, 16-35 2.8L ll, 50 1.2L, 50 1.4, 24-70 2.8L II, 135 F2.0L, 200 F2.8L ll, 70-200 2.8L II, 70-300L, 100-400L, 24 TSE L II, 85 1.2L II, 100 2.8L, ZEISS 100 2.0, ZE 50 2.0, ZE 35 2.0, ROKONON 35 1.4, SIGMA 35mm f1.4, S110, S100, sony RX-100 and one big-a$$ bag