Cute camera. It's almost exactly the same size as a G5... on paper. The body is much thicker though, and the G5 sports an articulated LCD. The viewfinder seems to be on par with other SLR cameras of its class, like the 700D and the D3200. Would be a nice camera in combination with some compact primes. Unfortunately, those primes are hard to find for Canon and Nikon, and here's one of the huge advantages of m4/3.
A Pentax K5 is only marginally larger btw., although almost twice as heavy. But Pentax can deliver those tiny lenses, making the total package comparable in size. I think I know which one I'd prefer, should I start from scratch again with a new DSLR.