I'm currently waiting to get my LG G-Pad (was on a budget for a birthday present and this tablet was going cheap and it looks a nice device! It's sitting staring at me until the 12th!) but I was hoping to use some of the functionality that I had on the Toshiba Folio. If it works it might be useful for you too!
I connect my Canon DSLR to the tablet via USB and then use http://dslrcontroller.com/
to take remote control of the camera (I have a 10m usb cable I use so I can place the camera near a bird bath or something). Pictures then get downloaded to the tablet automatically. Then if I want a rough mock-up of the picture I open the jpg version in Photoshop Touch.
Doesn't replace a decent, proper configured workstation, but it's quite good fun!
So if you have a canon it's quite a fun way to transfer pictures to the tablet. Not sure if it works on GPad. Hope so!