Thanks for taking the time to develop this plugin. It's great!
Just something I've encountered. My mobile theme uses add_theme_support('custom-header'); to display a header image.
This works correctly when the mobile theme is activated in WordPress as the default theme, however, when I have my default theme set as my desktop theme, it doesn't work.
More specifically, calling get_custom_header(), returns an object with an empty url property, when the main theme is the default. It returns the correct url when the mobile theme is the default.
Is there a way around this? Thanks in advance.