So Skinomi emailed me back and I sent them a ton of photos and measurements.
They said they are redesigning the skin for the screen (which is what I had problems with). I've since taken a spare they sent me to test and put it on the back (with some personal modifications) and I love it.
So I suggested they modify the back skin as well to make sure it docks just fine and also suggested I'd buy a skin for the base of the keyboard if they made it (the back part, obviously not the keys...).
If you have an unused skin from Skinomi, you can just use a razor blade to score the skin and then a pair of decent scissors to make the cut along the scored line.
I'll post back when I hear more.