The PG texts would be just fine, unless you erase them. The ConnTexts (do you know how long I've been waiting to use that one?

) are tied to the account at the ConnStore. Once the Reader is de-registered from your account, it won't be able to open them anymore even if you leave them on the device, so there's not much point in leaving them on it as all your friend would be able to do with them is erase them.