Throughout an average day, there a number of things I generally find myself doing which are hazardous to a necktie. In this scenario, some men go with the over-the-shoulder move. Other men opt for a tie bar. I tend to go with the in-shirt technique. Tie bars can be done very well in a very cool way, but these days, I tend to like my tie free and loose when the time is right.
When the time isn't right, I go in the shirt.