I'd say every pitcher understands that limiting walks is incredibly important. With strikeouts it's definitely up to their philosophy and understanding of the game (for better or worse). There's definitely pitchers that emphasize strikeouts and just getting a swinging strike pretty much every time. You're starting to see a lot of that with all of the pitch tunneling guys, those that work with Driveline and other similar organizations in the offseason. I can almost guarantee there are some other guys that are on the opposite spectrum, their goal is to generate weak contact, keep their pitch count low, and go deep into games (not relevant for relievers). I can't say what the split would be like but I'd say the strikeouts guys outnumber the latter at this point, and they are climbing, but both likely have strong representation among players.