I am contemplating getting a compact system camera(*) like the GX1 or Olympus E-PL3, and am mostly quite happy composing two-eyed on the rear LCD (I am not yet so long-sighted that I need to use the absurd unstable arms-length position, and can instead steady the camera with my upper arms braced against my body) but I fear the wash-out of the LCD by sunlight, which was the bane of my days using a fixed lens compact digital camera.
I am told that the new LCDs, with better coatings and such, suffer from this washout less often, but can actual users report their experiences? What range of light conditions can you handle with that "two-eyed composition tool" before you must resort to the peep-hole (or a black cloth over your head)? What about add-on screen shades? How much does the shade from a big hat help? I am not fashion conscious!
The GX1 and E-PL3 do have the fall-back option of buying an add-on EVF, but if I need to go back to an old-fashioned, one-eyed, peep-hole VF too much of the time, I would save money and bulk by getting something like a Panasonic G3 instead.
(*) By "system camera" I mean one with a select of interchangeable lenses, and by "compact" I mean the models with near-pocketable bodies, achieved by having no peep-hole viewfinder, either optical or electronic. The Sony NEX-7 _body_ is compact and with peep-hole EVF, but the NEX system zoom lenses ruin the compactness" part. And the price is out of line.