I have a new WP site with a couple of candidate themes, and would like the end user to be able to "browse" my themes. For that, I would like to use the Theme Switcher plugin By Ryan Boren, or something better if available, because something led me to believe it would allow me to specify a theme to be activated via the URL. I cannot find any docs on how to configure it for URL parsing though.
All I can find is a Theme Switcher sidebar widget, which causes trouble if the end user (or even me) uses that widget to switch to a theme with no sidebar.
I don't want that as an end feature either. I want to present the client with a list of URLs, each for the same site but with a different theme parameter.
PS: I have found a few solutions that select a template for a post via the post's URL, but I'm not certain whether a post type template would be the same as a full on, installed, theme.