Whenever I read about "across devices" or "all your devices" I think "really? my various linux boxes, android devices and tablets including amazon tablets where I've sideloaded stuff?". If I can't use it on a single device I have to write down/remember the password as before which means i'm unlikely to use a long, strong password. And even on devices which are supported I've struggled to marry the now-built-into-android support for these things (not sure if it was 1password) and browser plugin support for sites so I ended up fighting the various UIs to cut and paste credentials between them.