I fell in love with this camera when I held a production prototype equipped with the grip and extra battery. But that's the key, I'd want both those add-ons as the plain body is ungainly to my hands.
I'm still considering getting one to replace my 60D as a walk-around but can't really justify the price of it over the 60D. it'll cost me a lot for a camera + accessories + a few lenses I'll need to acquire.
The Oly's sensor outperforms the 60D in SNR at all ISO and, importantly to me, shadow noise regions are better by over a full stop from my estimates.
If I get rid of more of my Canon gear, disappointed as I have been with some of it, that'll free up some scratch and the OMD EM5 is at the top of my list for m4/3 gear should I go in that direction.
Altho good, i didn't much like the EVF.
An alternative to this, for me, is the very impressive new Fuji gear with the X-trans sensor. but it has very few lenses to choose from right now.
I really like both of these non-slr camera systems.
But, from an IQ performance/$ standpoint, i've already got Nikon's excellent, cheap little D5100 and more than enough lenses already to cover most situations. The d5100 is a small, light camera with an even better sensor, even if it does not have the same overall performance; I rarely need speed. I take this little APS-C sized IQ monster, with one 16-85mm lens, or the 18-105mm, both are optically stabilized, and I have a very compact and capable walk-around or travel cam that makes me wonder why i still keep the 60D+15-85mm. It must be some remnant of loyalty to the brand I spent the most years with.