Path to Become an Enterprise Architect

Praba Siva, in this blog post, created an excellent chart for the path that an individual should follow to become an enterprise architect. He details what type of positions you should hold, for how long, the skill sets learned from each position, as well as what the next steps and positions should be. (Click on diagram to see a larger version)

Alan Inglis, in this blog post, discusses the above chart. He comments that he would add a business entry point, and would also like to see an entry point from an “information or data perspective”.

What are your thoughts? Is there anything else you would add to build on these two authors viewpoints?