I'm just saying, once you put these larger lenses on them, they are still somewhat bulky and awkward. certianlly not in the DSLR league, but I've seen some 4/3s with larger lenses that aren't far off.
I've always liked the credit card sizes PNS with telescoping zoom lenses cause you could slip them in your pocket and take decent enough pictures. I'm looking at the X30 because it offers a lens like this, but a step above PNS.
But I'm very under researched on them, but I still don't think they are quite to the point where I'd dump the DSLR for, but I assume they'll eventually take over.
I guess it depends what mirrorless lens you get, some of them are pretty dang big. I wouldn't get one of those. If I was to go with the EM-10, I'd get the Panasonic Lumix 20 1.7 that everyone seems to enjoy..affordable too.
The X30 is interesting indeed, I really liked the X20..but the files in my opinion were just terrible. Even with shooting raw, it rendered textures terribly. Looked like too much noise reduction in Lightroom. It bothered me so much to the point I had to sell it. Maybe they fixed this on the X30. I think the X10 was a bit better at rendering textures..but it used a different type of sensor and that might have been why.