I have a 1Password.com account that I use on my iOS devices and PC. My question is if I have a separate vault that I sync only with iCloud, and someone happened to have my master password and secret key, would the only way they have access to that vault be if they got past Apple's two step verification? I would be comfortable with that. I just want to be sure there's no other way they could have access to it other than if they had one of my Apple devices.
The only reason I want a second vault is because I use 1Password on Windows and if somehow someone captured my secret key (I know it's only entered once and the odds of someone capturing it are very small but I know a PC is far more likely to be compromised than iOS or Mac) I wouldn't want them to have access to a few specific things.
Do you need to subscribe through iTunes to sync through iCloud?