Tails is an amnesic operating system, it is not good for storing stuff- at least not locally. But you might not want to store stuff locally if you are really worried about your stuff getting physically seized and analyzed by some sort of goons. Encryption can only go so far when the law may very well be able to force you to unlock your device. In many countries they need to show that the device is yours before they force you to unlock it, which is harder with a VPS you access over tor/i2p. Unaffiliated goons are even worse, they can just torture you for a password without any lawyer shenanigans.