I use 1Password as well, but instead of using its secure notes section for "security question answers," I put these inside optional fields in the 1Password logi

I use 1Password as well, but instead of using its secure notes section for "security question answers," I put these inside optional fields in the 1Password logins records for the particular site. You can create whatever additional fields you like, or just use the note field. Further, instead of adding "valid" information, I use random strings of characters for my answers, and store them here as well, unique to each site. Seems much more secure than telling a whole bunch of sites my first pets name. Another nice feature of 1Password is that it can store/generate the rolling Google Authenticator style 2 factor authentication codes right inside the login details in one of the additional fields.