RX1 EVF Ergonomics
What is your point of reference? I've tried the EM-5 view finder, and was not impressed with it. I have the NEX-7 and NEX-5N viewfinder (same technology), but have so far found that as outstanding as those are, the EVF on the RX1 has so far for me been completely stutter free, and the shadows are more open, and there is less noise in low light. The improvement is reputed to be the pairing with a different sensor/processor rather than a change to the electronics.
If it is any indication of usefulness, I was able to use the stars as a (manual) focus target last night.