Better understanding of Blog Types plugin

The back story... I've been anxiously awaiting a way to allow users to select a New Blog Template on Signup. :wink: This feature has been requested a bunch of times and the recent post got me thinking...

I've have this Blog Types plugin installed and really don't know how to take advantage of it. Are there any conditionals for this plugin? It seems pointless to just select a Blog Type if I can't use that data to change some design or behavior in the actual site. Maybe I can alter the CSS for the different groups of something to get what I'm after.

Is there any documentation that I can read about how Blog Types are intended to be used after signup is complete?