Why would one call the Olympus micro 4/3 a rangerfinder? That's what missing is a rangefinder. It's just a P&S with interchangeable lenses. And while the Panasonic G1 at least provides an EVF, Olympus from the Photokina Mock-up doesn't even do than.
Personally I've never called the Oly a rangefinder.
I think what we're getting at is that while it isn't a true rangefinder the form factor emulates a rangefinder and thus one would be more likely to utilize the camera as if it is a rangefinder. Take a look at the Ricoh GRD or the Sigma DP1, neither are true rangefinders but they both are fairly well liked by the RF community simply because they
a) produce good files
b) have sharp prime wide angle lenses
c) allow one to scale focus and then shoot with an external optical viewfinder like one would do with a RF
d) have form factors similar to a RF
I shot with a GRD for a while and an external optical VF and it was a similar shooting experience to using a prefocused Leica. Now, shooting with the GRD in low light or when I needed precise focus was a whole other story. The Leica beat the pants off of it there.
In any event, the point I'm trying to make is that for those of us who enjoy shooting with a rangefinder the Olympus micro 4/3rds becomes a viable digital option. Many of us can't afford to shell out for the M8, and R-D1s are getting harder to find not to mention impose a 1.5x crop factor. Subsequently, something like the M4/3rds Olympus becomes attractive to someone wanting to replicate the rangefinder experience-sharp wide primes, quiet, small. It'll never be the real thing, but for some of us it will be close enough.
No need to split hairs over what we call it, sure it doesn't have a RF mechanism, but if the cameras allow me to shoot as if I am using a RF who really cares? I don't think I will ever buy one, but still, I can definitely see the appeal for an RF user.
Besides, I'd rather have a digital M back
🙂