Hi Richard,

yes the plugin 'Responsivizer template switcher' doeas all the job of the mobile detection and doesn't need any additional plugin to work. Notice that the Responsivizer template style must no have assignments, it's loaded automatically by the plugin. The emulator loads the responsivizer template in another way and not involving plugin, in particular you can test it appending the query string '?template=responsivizer' to URLs of your site.