I'm sure you'll read all the great stuff in other reviews (solid construction, etc.) so let me get right to the problem (s)
1. Some folks have larger hips...unless you have a narrow waist there's no way this will look good. (enough said...)
2. And this is the biggie: even after the production you're going to have a 'guilty' side where there's a little bulge and if you're going to get into you're pocket you have to be careful.
I bought it because on the Wiz product review they said it could be used as a holdout to keep a few packs of cards. I thought since summer is coming I could wear it under an untucked shirt because I'm losing a lot of pocket space by not wearing a blazer. You 'kinda' can but I really wouldn't trust it for that as a worker...
Now I know it's not marketed for that last purpose and hip size is not the trick's fault but my review is based on point 2. You pretty muck do need to do the production early in the show and you will deal with a guilty side the rest of your show...

Regardless of the ad copy this routine is not workable for for larger bottle loads like champagne unless you're wearing a Hawaiian mumu. Way overpriced for what you get.

The DVD is GREAT. What a creative mind! So many bottle productions for stage and close-up. I can already see many of them I want to use.

The gimmick included is a bit different from the first version that came out. I'm not sure if the new one is an improvement or not.

There is no way to hide the bottle. David Stone must have had his blazer tailored just for this. It's not realistic and not worth the price. I really really wanted this to be good. It's only saving grace is using it as a hold out for multiple decks, or using it to hold the glass from Scott Alexander's Big Shot.

This gimmick is not for all body shapes and I think this must be warned in the description.

Good ideas for the production but not an item for bigger hips or specific costume.

This is a great piece of magic. I have had the opportunity of seeing David perform it many times during his lecture. It's true that you will probably need a narrow frame, but even then it will take some getting used to when you hold out in this way.

All of the thoughts and ideas are great. I use my gimmick to hold Rubik's Cubes when I am not performing with a large bottle.