Trust issues
I don't like security advice from a company who sells security appliances. I can't trust them because they have a vested interest in finding nails and trying to sell me a hammer.
From the article/PR: "Together, Cisco and Portcullis will provide strategic guidance to our clients to help them..." and in my head I changed the rest to read: "... know which expensive bits of Cisco kit to buy to address any issues because you wouldn't want the auditors to find out you hadn't done anything, now, would you?"
Security Advisors/Auditors should *always* be independent from Security Solution sellers.