title: NetOffice - IDTExtensibility2 vs ComAddin
body: <p>Is there a technical advantage in netoffice by using IDTExtensibility2 vs ComAddin in netoffice?  Or do they both accomplish the same thing (although via different paths)? </p>
  
  <p>I'm aware ComAddin inherits from the IDTExtensibility2 interface - I guess my questions is simply - why would I inherit directly from the interface and not from the ComAddin class?  More control? </p>