Button pockets are probably NOT the way to go if "secure" is a desired metric. Full length zippers will keep your passport/wallet/etc from sliding out as you wad that sucker up and put it in a carryon, or use it as a pillow onboard, etc. Not to mention pickpockets and the like once on site.

Looks like you're trying for a little more corporate-casual dressy look, or I'd toss out my usual Arc'teryx ATOM-LT recommendation. (very lightweight, packs down to near-nothing, inside-chest + two hand pockets, all with low profile zippers, makes a great pillow, super warm even when wet.) But - while a classy brand name - that's a more activewear jacket than a barn coat might be viewed as.

I've gone to "not so many pockets" because that's a great recipe for slapping down all your many storage compartments and hidden pockets frantically looking for which one has your boarding passes. I don't need more than the three (chest for passport and wallet, hand pockets for immediate boardingpass/sunglasses/etc.) pockets. Add a shirt or pants pockets (safe assumption: You'll be wearing pants.) and that's already enough to carry phone, wallet, and the other usual things + the travel necessities (boarding pass, passport.)