Security provider enforcer - visual indicator

I was just checking a set of pages to make sure they were all proteced. As far as I can see, the only way of checking this is by seeing if the block of PHP code has been added, in code view.

This is not very inconvenient, but it would be useful if this information were made more obvious - from code, design or preview mode - eg by showing the name of the security provider next to the button used to add it:

This would also be more consistent with the UI generally.