Hi there,
I have recently changed from Nikon DSLR to Panasonic GX-7, and don't regret it--at least compared to the bulk and weight.
However I found the DSLR much simpler in use than the highly sophisticated micro4/3ds.
Re your choice the Oly--I did love the feel and handling of it but opted for the Pana because it has a build-in flash which I use quite often for fill-in or as master flash in wireless.
Cheers Moxi