WinZip made a similar choice with its encrypted archives: you could see the list of directories and files before supplying a password.
I would prefer that my account info be encrypted, but I can't use the new OPVault format, because it requires 1Password 5, which isn't supported on OS X 10.9.
This is actually not the whole story. WinZip archives can be encrypted like you describe, but they can also be created with both the data and the list of contents encrypted.
I would prefer that my account info be encrypted, but I can't use the new OPVault format, because it requires 1Password 5, which isn't supported on OS X 10.9.