The problem I have with these cards is they're all single use. Once you pop it out and use it, it's now just a loose sharp piece of metal. Maybe you could reuse it, but then you loose the card form factor. That just feels very wasteful.
They seem to be more of a set it and forget it type piece of kit. Something you don't intend to ever use, but if you run into a situation where you need a spare hook, or if you snap the last arrow you had on you after days or weeks of being out in the elements, at least youll have one less thing to worry about in making sure the pointy bit of the arrow kills something? The coolest "survival" card they have IMO one is the one with the thicker arrowhead that snaps into place (it wasn't shown in this video). It comes with a bladed section and has a reusability to it that these don't have. Either way, little mini Altoids tin would keep the kit together after broken open!
forget the urban kit... You just need a good sak to get the job done... And the hunter kit and fisher kit are useless in my mind.... I don't like those "survival" cards. It's just marketing and a waste of money.. But they seem to be quality..