Could I ask why you went for the GH2? From your signature I see you are pretty heavily invested in Panasonic - is that why?
That's one reason, the other one is I'm quite happy with the G1 and its lenses. My D300s gets rarely used these days and with a GH2 I hope to get about the same high ISO performance as the D300s, so the only reason to keep the D300s is its better performance in action shooting. Video is not a priority for me, but since I'll get it for free with the GH2 I might as well buy the 14-140mm with it to get better use of it.
Lens options for Panasonic MFT are indeed fairly limited if you want to have automatic diaphragm, AF en IS; the Olympus lenses don't offer IS because the Olympus bodies take care of it. OTOH, Panasonic has quite a good line-up by itself and optical quality is mostly excellent; most notable exception is the 45-200mm which is OK but not great. If you're willing to go all manual you can use virtually any lens on an MFT body by buying a suitable adapter.
So in short: buying a GH2 was a no-brainer. I was only deliberating a bit longer about which kit to buy. As the body-only option doesn't seem to be offered here in Europe anytime soon, I decided to buy it with a lens that offers something extra above the ones I already have.