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I'd echo sjms' recommendation, in fact after reading a post of his some time ago I purchased the 5.11 LBV Tac Vest and pouches. Spent less than other vests and fully customizable by me any time I want by using the MOLLE fasteners.
Took mine on a couple of international trips to Africa fully loaded while boarding the plane just in case I got gate checked with the Kiboko which didn't happen once, but as a good boy scout I was prepared. I got the black one and even in equatorial full sun the mesh design breathes easily.
Funny story though, coming back on my last trip in Seattle International Airport, a couple of Army guys gave me the eye as I sat down in the waiting room. They had their duffles and were obviously on leave waiting for a connection. We had a good chat about how great the LBV is and although I have never been shot at I do a lot of shooting of my own kind laden down with 44 lbs. of gear, a life saver for them, a gear saver for me.