I also go a mirrorless setup a while back for hiking, etc. My old body just can't carry my full frame Nikons around very far any more. I went with this one:
It has since been replaced with the GH4, but I am pretty happy with it. I have a 7-14, 14-35, 100-300 and 45mm macro so I can cover most of the focal lengths I want with a fairly light and compact kit. Not ready to dump my DSLR's quite yet, though.
I also have the GH4 and several lenses. Very versatile system. It's my go-to video camera, and it is an excellent stills camera although bigger and heavier than other Micro Four Thirds bodies. The swiveling and tilting rear screen makes shooting low angles easy--if I had to contort my body to get ground shots I might not get up!