I think that for me, I would leave speech recognition off. I can get into this game pretty well on it's own, I need to leave something in place to remind me that its not real.
I like to play the "das boot" soundtrack while on patrol (the hunt), and the collection does include clips with dialog from the movie. Since I've seen the movie so many times, listening to the german does not present any problems.
Besides, my wife has to suffer me playing this next to her most of the time as it is, the least I can do is *talk* to her, instead of the game
