Any way to have LV button bring up image playback?

[aaronkelly]

Hey guys, I'm looking for a script/module that would allow me to hit the LV button to bring up Image Playback. I searched the forum but couldn't find anything relating.

Backstory: I have an underwater housing that only allows me access to shutter, aperture, Live View (switch between photo/video, and record), but doesn't give me access to image playback. I also have a 2-stage pistol grip attached that isn't used much but could be utilized as well.

Shots in water can be pretty tricky, so reviewing pictures and being able to scroll through to double check exposure/composition/focus would be very helpful. Any help is appreciated!