Ok I for one am all for cross training in grappling and anti grappling. People on a certain other forum i'm sure we all know which one constantly hates on styles outside of the ones trained in MMA. I'm not saying they're right or wrong but look at this video and answer if you think you need a primary striking system for self defense instead of just doing grappling.

http://www.youtube.com/watch?v=00g5a416rdU