So I finally downloaded the GH4 "Standard" scene file for a shoot where I needed to match the two yesterday. Made some modifications that didn't quite turn out the way I wanted, but overall all I can say is "Daaaaaaaaaang"...
Pity it took six months for Panasonic to get it right, but holy crap I couldn't be happier with the image right now.
I'm not a GH4 owner but I like the looks of that scene. Occasionally in certain settings the blacks look a little crushed but typically it seems more of a lighting problem and not necessarily a problem with the scene file. I thinks it's a very good overall scene. I'd really like to see a couple of more scenes professionally done in the new firmware. For now I've replaced factory scene 4 with the GH4 scene and I think that gives you some decent flexibility right out of the gate. Factory scene 4 was my least favorite scene under the conditions that I tried it in.