Just a question: but is an SEO and a web analyst and an affiliate marketer an interchangable job title?
12 years SQL Server admin and SQL developer were interchangable but they soon broke free. Personally, I don't think they are - I see them as different skillsets. I know some people are good at SEO and PPC but Online marketing is becoming very competitive and I would have thought they had specialised already.
Of course, it depends on your interpretation of SEO - which could be onsite + Analytics focused - but then it probably won't help you rank.