This is already covered in https://github.com/jboss-developer/jboss-wfk-quickstarts/tree/2.7.x/kitchensink-deltaspike
So I guess this should just be Resolved as Done and Closed.

Also, the expense-tracker DS example makes use of @Transactional:
https://github.com/rsmeral/deltaspike-examples/search?q=%22%40Transactional%22&type=Code