If you're familiar with card clips, you know they usually destroy the tuck box. This is an awesome alternative for luxury decks or those with a higher-quality finish. I have two gripes with it: 1 - the entire top is not magnetic, there's only a small circular magnet in one location. 2 - Unlike a card clip, it doesn't prevent your deck from being crushed, it more so just covers the outside from water, dirt, & debris.
With that said, it gets the job done if you're carrying your card in a jacket pocket, but not the best option for casual carry in a pant pocket. I'd get it again with a discount, but the quality is nowhere near as nice as TCCs deck collection box.