Good ideas and a few that I will add on my next trip.
I don’t use a folding wallet, but carry a money clip type wallet. I always remove my cash at the screeners and send the clip through the machine. I carry my swiss microtool and have only once had someone ask to look at it. It was on a return flight from Europe. The guy wanted to see the tiny screwdriver. He passed it through with no problem. BTW, I own the E-vest and use it on every trip. I have a black one, and it works great from business meetings to playing tourist. It easily carries the necessities of water, food, flashlight, PSK, and added things like gum, carmex, alcohol based hand sanitizer, floss, pen, change, tickets…etc.