No LA-EA4 yet. I may do so, Adrian Paul has them in stock. Thing is I do not want the SLT mirror, I have that in my A99 and it's OK but I want a pure lightpath. What I get will depend on what I sell, and having just spent £2600 I do need to sell something to cover it.
Initially, I plan to try the A7r with a non-recommended Voigtlander 15mm; a Minolta MD 28mm last series; and a Russian 50mm f/2 tilt-adapted lens. I have some longer lenses but I really don't see the point. without stabilisation. I am sure the Tamron VCIII 18-200mm used at the 200mm end and cropped to 16 megapixels will produce better actual results than any attempt to use things like my older 200mm Minolta and Vivitar lenses.
For anything over 200mm, a regular APS-C - maybe the A77 or the A55 - with sensor stabilisation does the job better. Same goes for macro. The A7r is not ideal for microscope or bellows macro work either because of the shutter design.
Been testing flash on the RX10 and find that whatever the manual says, I can't get a faster shutter speed than 1/1600th. But my camera came without a manual