Is InterSystems IRIS for Supply Chain a seperate version of IRIS, with different commercial licensing models?  Or can partners just go ahead and use it as part of IRIS?

How would the AppS.REST Handler co-exist with a 'Spec-first' approach, where the dispatch class should not be modified manually - only by re-importing the API spec? 

The AppS.REST user-guide states: 'To augment an existing REST API with AppS.REST features, forward a URL from your existing REST handler to this subclass of AppS.REST.Handler.'  How would this work in practice with the above?

Thanks in advance.