Thanks for the review! FYI, in camera slow-motion is at 24fps (23.976) and personally, I find it better in post to use then 60fps because the GH3 recorded the motion in slow motion natively with less motion blur whereas recording in normal speed (at 60fps), you still have motion blur, then to slow it down in post, you are slowing down the footage but also the motion blur. Here's some test I did with in-camera slow motion and I used either Premiere Pro or Twixtor for super slo-mo.
http://www.youtube.com/watch?v=-F44IIPUSNA
http://www.youtube.com/watch?v=GUW3aFJgG_w
