I have some hours now with the speech mod and I still like it, getting used to the commands now some more. I use "press to talk" so when in a sticky situation I can still give clear orders by using the regular keyboard commands. With the voice it's still a bit unpredictable at stressful situations, like unexpectedly going into a crash dive in shallow waters
However, it's very cool to shout "ALARM" and have the Chief take her down ASAP while I'm leaning back in my chair... and then ask him to level out the boat.
I speak some German but the English commands seem to work better in this mod. (obviously)
Good stuff