What we do is that we have a tag that we quard with the WCM and check if the runmode is a test environment.
This tag displays information about the bundles we have deployed on the site, what runmodes that are enabled on the site, if it is an author or publish. All the build information is generated and inserted in the bundles. Then you will see it on the pages and not in the quickstart toggler. Even if the server is started as a service.
If I get any spare time, I will add this feature to the ACS AEM Commons project.
/Ove