Based upon the photos shared by my SA, the Nécessaire seems more like a narrow zippered pouch for organization, rather than a bag insert for support. The shape of the Nécessaire is fairly flat and boat-like, and it doesn’t seem to fill out the inside of the tote. Personally, I don’t find the angled shape of it conducive to being carried alone as a clutch. I passed on it for these reasons, but I’d love to hear input from anyone who does decide to purchase it.