ooh never thought ab that distinction actually.. wrt backups.. does it matter? it's just another note, but encrypted..i guess

but who am i lol, we'll hear it from iefan when he wakes 

 It also backups your DMs data, and of course, the content of DMs will be encrypted. You can re-broadcast those events, and once the relay has those events, your client should automatically decrypt them, and you should have all your DMs back.