The pic with the dogtags works best for the backs of the personnel cards. For the backs of the playing cards, I used the pic on the left (since it needs to pull double-duty as open ground).
I've been redesigning the PC cards as well. I added the pin side back in. So I don't have the option of having the dog tags on one side.
I also considered going with the dog tags for the action deck and just printing up a couple open ground cards to put on top of whatever card was being used for open ground. I think I'm going to stick with the blend option.