The new Carry Speed VF-3 LCD View Finder does not sit low enough to be used on a camera like the GH2, so the solution would be to raise the camera. Here Scott writes in and shares his DIY mod using two Sima quick release adapters to get the viewfinder to somewhat fit on the GH2 camera [Thanks Scott]. It's a very close fit, but keep in mind it was never originally designed to work with the GH2 camera.
This DIY solution to raise the camera is basically the same technique I used to mount the Carry Speed VF-3 to my Sony RX100 (seen here) and also used the same method to mount to a Sony NEX-7. For those that aren't familiar with the Carry Speed VF-3, here's a great product review from HDSLRNOW.com.
SWIVI LCD VIEWFINDER from HDSLR NOW on Vimeo.
First inventory of this item sold out in 24 hours, and there's been a bit of a wait, but today the second shipment of new inventory has arrived. Introductory pricing still available (at this time). For more information about this product, check out my old article here: http://cheesycam.com/new-gear-swivi-lcd-view-finder/
Some good news is that Rob shared these photos of the VF-3 on a 60D with and without battery grip. [Thanks Rob]
I have also confirmed it to work with a Nikon D7000 (with and without battery grip), Canon T4i (with and without Grip), Canon 5D Mark III, Nikon D800, etc. The adjustments make this possible to work with many different camera types.
You can find the Carry Speed VF-3 product page at the website CarrySpeed.com (Click Here).
Carry Speed LCD View Finder
[Update] The website got slammed, so if you can't order, here's an alternate listing via Amazon:
Carry Speed Swivi Universal LCD View Finder via Amazon