What I would be unsecure about is if anyone got hold of the paper card wallet, and the person know what passphrase is and private key, or if the person know about the paper wallet card, it would be easy for such person to compromise the wallet. I can easily create a paper wallet myself in a way I can backup the private key and use the address for receiving bitcoin which is not large amount but used for small picker money. But we are not in that era anymore, i would have just prefer using online wallet like electrum on my mobile device for it. Maybe this could be a means bitcoin can be given to a someone as gift, but i still see it no advisable in my opinion, I can just add money to it to buy a cheap hardware wallet instead. But I am surprised that btt members are in support of what is not in support one if the reasons bitcoin was created.