Then really, Google's done you a solid. Now everyone using your site will know it's not as secure as their bank, and therefore, when their creds for your sites

Then really, Google's done you a solid. Now everyone using your site will know it's not as secure as their bank, and therefore, when their creds for your sites are stolen, and they get their identity stolen as a result, you can just say "Hey, everything told you it wasn't secure, not my problem"...