Swim has a jacket they use for kleptoactivism. It's a good brand with strong seams, lines and pockets.
The one drawback is that none of the pockets can completely hide bottles of roughly champagne/prosecco size. This is a problem considering 'tis the season!
Stuffing down the arm is possible as it's a little baggy but would be noticeable if someone were looking.
Swim is considering installing a 'long pocket' down the inside just back from the breast - along to obliques.
Has anyone done this or anything similar? And would it be considered as 'going equipped'