Speaking from experience, if you are running the Information/Public Relations/Q and A side of the table, I recommend being out of armor and wearing either your HOD Jersey, if you have one, or another 405th Branded item from our RedBubble Shop:
405thCommunity Shop | Redbubble
The Photo Op shifts are definitely meant to be done in armor, but It's just easier to talk about the group and explain our mission and even the various construction methods while being out of armor. Plus, it's easier to sit down at the booth not in costume.