It was my intent to make a two way back originally, and I started to change the center of the design, but if you look closely at the entire design, the rest is not really two way, it's very similar but there are subtle differences. If you cut and overlay the images you can see them. That being said, I have a back version where I did make the center image more a two way design, but I didn't like the diagonal line it seemed to make on the card back.
I'll try and find that design and post it here and perhaps take a vote on which back looks better.