I am also interested in EM5 for street photography. I tried the camera with PL 25mm/1.4 at my local shop. For me, handling is not friendly, AF focusing is ok with the lens. But if compared to my D300, it is totally different. It can not replace my D300 if I were getting one.
When compare to fuji xpro 1, I like xpro 1 better in term of handling and photo quality. I end up getting xpro 1 with 35mm lens. One disadvantage of the xpro is it has limited lens choices.
I feel that both Em5 and xpro 1 are over price. If weight and size are not an issue, I still prefer DSLR for backup.