[TheLastSuperman]

Originally Posted by OldSchoolDSL

Assuming I'm a complete noob (not that I am, but it's just easier to explain thing to me like that).... What does this do, really (that vBulletin does not)?

Per the description:

This modification allows you to do the following:

• Import / Export standard and custom vBulletin templates.
• Copy multiple templates to multiple styles.
• Delete multiple templates from multiple styles.
• Save multiple templates in template history.

So with this it's templates not just a complete style, it allows you to do more in terms of customizing styles not within a parent style. Something I feel you would need to install and test to help you understand it then you might go "ohh wow..." or not, it depends on how often you customize your style(s).