Just use a long and random 1Password, and store it in the OSX Keychain (1Password supports this). Then back up your user keychain with the rest of your files and don't forget your login password. Alternately, Mavericks (which comes out in a week) will sync your Keychain items to iCloud for you.
This is all moot though because 1Password is a pain in the dick to use on iOS, and Apple's using their lack of plugin support for MobileSafari to hinder competition. In Mavericks' Safari, you can now save passwords for forms that specifically attempt to disable password storage, and sync those encrypted passwords to iCloud. This wouldn't matter much... but that sync now works with iOS7's MobileSafari, where 1Password can't load a browser extension to compete.
TL;DR: Cool story, but 1Password unfortunately becomes OS-bundled obsolete in a week.