This time it's really simple: Google Drive support is finally coming! With a new splash screen!
So if you're synching with Dropbox right now and want to switch to Google Drive, just press menu, and select Cloud, and you'll be redirecting to this splash screen, in which you can choose to link to Google Drive.
I'm trying my best to make Fabrik as perfect as it can be. So, as always, if you run into any problem at all, please contact me. I may not be able to response in time, but I'll definitely read your message and put them in my (very long) todo list. Enjoy!