You can use plyBlox to hook onto Inventory Pro’s events. For example, when a new item is added to the player’s inventory you might want to display a message, when equipping an item, you might want to switch a skill set.
All information about the event can be seen in the lower right corner of the plyBlox editor. Complex item types like InventoryItemBase can be grabbed using the Temp SystemObject.
Examples can be found in the plyGame demo scene, which is located in InventorySystem/Demos/Scenes/plyGame. Shown below is a simple example of grabbing the category name of an item that is equipped. This can be useful to switch combat sets based on category weapons.