Pop, Yes, Olympus's kit zooms leave something to be desired. But their 17mm prime isn't bad, nor is their 25mm prime. I put the 25 on en E-P1 and a Leica 50mm auxiliary finder in the hot shoe. With zone focus it's a pretty good 50mm-like combination on the street, where absolute IQ isn't critical.
I'd love to see a full-frame mirrorless along with a compact 50mm lens, and I suspect we're going to see a few of those beasts before long. I loved my Leicas in film days, but the M9 appears to have such a limited ISO range and such low reliability that I wrote it off. The Fuji X100 would be fine if it had interchangeable lenses, but with a fixed 35mm equivalent.. I don't think so.