Is the mic and EAP redundant with both sources being somewhat similar?
No, Not at all. They both sound different enough to compliment each other. The mic adds the wood and air that the EAP misses. The EAP is good on it's own and could be used solely, but I wanted a more realistic and natural sound that the EAP couldn't offer on its own no matter where I placed it. Contact mics/piezos can get you only so far. It also gives a lot of flexibility in live situations such as if you were playing a rough room due to the ability to blend.
Know though that I am very very particular as far as sound goes due to studio experience. I don't settle until I am satisfied. This combo has pleased my engineering ears. That can be hard to do.