One of hottest features in JSN Epic PRO is extended styles adapted for 5 most popular Joomla! extension: K2, Community Builder, VirtueMart, JEvents and JoomGallery2.
Technically extended styles are overrides of default extension’s style. Some of these extensions has their own template system and you are free to use them. In that case, you need to turn off extended style by tweaking template parameter and use the native extension’s template you want.
JSN Epic Free does NOT support any extended styles. JSN Epic PRO supports all 5 extended styles.