The Peter's Principle generally applies to managers who focus on a knowledge of specific tools or framework, instead of focusing on a good person with applicable skills.   It is a major error made consistently in IT.   David Linthicum presents a real world example that KPI Global Technologies finds all the time:  a company or recruiter calls KPI and asks, for example: "does your organization have at least one year experience in WSRR?"   What they should be asking is: "How much experience do you have in SOA governance."  The tool is secondary.   SOA governance is about people and process.  Many organizations fail to get this simple point -- and is one reason why so many IT projects fail.