Q: Which Templates can be switched with the TemplateSwitcher?
A: All templates that do not extend the Joomla default template system can be switched.
Until now, we've found only gantry based templates to be not switchable by the TemplateSwitcher.
The reason for this is that the gantry framework extends the Joomla template system, which makes it incompatible with the default template system.
Apart from this exception, all other templates should be switchable.