In work environment, "trying things your way" is seldom harmless to success of the product or one's personal ethics, career, reputation, work life balance... Who will fix things if they go wrong and how much effort is such a fix going to require? How is my performance going to be evaluated if I accept a bad call? If the answers are clear and acceptable to me, I have no problem being flexible. Making things clear often involves talking to our common manager, although I might also decide that I am willing to put in the extra effort to fix things if needed if the other person is not being obnoxious.