To be honest aloha, I had a different mental picture of an EDC vest when you described this - much like what my brother wears almost every day, with pockets down the front and a cloth back - what we once referred to as a photographer's vest. I understand all the benefits of weight distribution etc, but this vest would automatically make me go alert if you walked up to a TSA barrier, or into a bank. It is not out of place if you are hiking, but anywhere that's trained for security screening I think the design would quickly prompt a checklist of questions that must be cleared before they could feel safe again.
Visually the Ribz resembles a body harness design used by human bombs to pack explosives.
There, I've said it, and I hope you take it the right way, I feel guilty for raining on your honest review. It looks like a good product, but I think it was good that you took it off and had it screened with your carryon. Could you assess how the design was received - by flight attendants, by fellow passengers, by others as you walked through the terminal with this on? (Allowing of course for the reality distortion field that is Vegas).
That was my fear too...the way it might look. So I didn't wear it until after the security check. And the flight was cold so I had a jacket on too. It's not very noticeable with a jacket.
I think if you don't act out of place, most people will not perceive it that way. And I really was trying not to be noticed. But not very threatening when you pull out a book to read, a phone to make a call and some snacks.