The concept of the Olympic is fine, but here is the problem-try holding a camera in your hands with a long lense on it without a tripod. I used to be able to hold a Leica with a 90 mm lense on it still enough at 1/8 of a second not to see any induced motion. I could do the same thing with a Nikon SLR. The reason was that I could hold the camera in my hands with my elbows pressed against my body-essentially making a tripod.
With a digital camera with no finder, you can't do that. You have to hold it far enough away from you to see the screen. Plus light washes out the finder.
Olympus does make a fairly small real SLR.
Don't get me started, you know how I get.