I have an E-20, and one of the reasons I bought it was the viewfinder. I really prefered it over the EVF's on the other cameras I looked at.
Scott,
I can see that, given EVF's as they were when you got the E-20, that the optical viewfinder has its advantages, though no-one is offering them anymore in that format.
Since you have an E-20, can you answer some questions about its VF?
a) how large is the VF image compared to a typical modern AF 35mm SLR VF, of about 0.72x with 50mm lens?
Olympus does not give this information on its spec. sheet. [If they do give it somewhere like in the manual, I can imagine it being quoted in the strange traditional form like "1.2x @ 50mm", which would give an image about as big as for "0.3x @ 50mm" in 35mm format.]
How did the VF images size compare to that on the EVF cameras that you compared to?
c) how adequate do you find that VF image size?
Smaller format DSLR's are leading to generall smaller viewfinder images, so I am curious as to how far down the VF image size size can go before too many serious photographers find it very inconvenient.