You should be using the Supervising Controller pattern with Ext JS 4

You should be using the Supervising Controller pattern with Ext JS 4. Here's why:

• pure MVC is wrong, as the controller is not allowed to communicate with the view. 
• Passive View is wrong, as you can then not take advantage of data binding (think stores in comboboxes and grids)
• it is easily testable
• Martin Fowler recommends it
• Microsoft recommends it in their Application Architecture guides