Yeah ive seen MMM all over the place, seems cool.
I had all intentions of earning something like my JLPT 4n or 5n but for the most part your Japanese doesn't relate too much your job.
I figure you should know enough to not get punched in the face at the grocery store.
It annoys me when I meet people that live in the US and don't speak a faint word of English so I feel Im obligated to be able to partially communicate if I was living there.