Upload & Sell: On
I probably won't buy this, as I'm not a huge fan of the focal length. I tend to like a longer portrait lens in the 50-75mm range on m4/3. I will try and get a review sample at some point, though.
When I want really shallow DOF in a manual lens, my Hexanon 57/1.2 works great for me. That said, it is exciting from a system point of view.
Oh, and while pictures of kids at 1/20 aren't great, stationary adults are fine, though I guess I would shoot for 1/50 or so if I could get it in dim light, and 1/200 if I've got lots of light.