I also bought that dialogue system but as a noob, for my is not an option. After open the .capx and see the editor dialogs, the json and see all the things to adapt to my game... :S .
For that i'm looking for a plugin, something that can be configured with properties/parameters and only a simple group in the events to config a few things. But well if nobody develops a plugin when i get more experience i will give a second chance to the dialog template.