I'll do the same thing. Sometimes I'll use Montreal steak seasoning, but usually just coarse salt, cracked peppercorns on each side and a light dust of garlic powder on one side. Let it sit until it hits room temp and throw it on a hot grill.
Not knocking how anyone cooks their steak, but the indirect heat thing isn't for us when it comes to steaks. Brisket is the cut of beef that gets indirect heat at our house.
I've honestly never heard of any professional chef using indirect heat on a steak. Chicken, pork butt, brisket, etc. indirect heat all day long.
To each his own though...If it works for them, keep at it.