The impression I have here is the Olympus 4/3 camera can be complementary to but not a replacement for a DSLR. I currently own a D3 and a D300. I would like to get either the OM-D or even a Panasonic GH-2 as a travel camera, but would need to sell either the D300 or D3 to fund the new purchase. I think I would sell the D300 since its 1.5 crop is closer to the 2X crop of OM-D, and then keep the D3 for full frame.
Graham From St. Augustine, FL. "I like photographers, you don't ask questions." Ronald Reagan to White House Press Photogs