Kraig - when you say away from the body, do you mean old FBI style of holding the light out to the left (for right handed shooters)?
New FBI usually involved "locking" the light against your chest, cheek, top of the head etc and allows you to search more naturally, keep a tighter composure and illuminate your sights as well as the target easily. Since the light is held in tight, there also seems to be less disconnect between shooting hand and the illumination source.
Two handed shooting styles like Harries have a very specific benefit in pieing doors and windows and sometimes more general benefit when working close to cover. New or Old FBI style does not always work as well for this sort of flashlight searching. The disconnected lighting styles have a drawback similar to raised sights and close cover. The closer you are to your cover or an obstacle, the more likely you are to illuminate the barricade in front of you instead of the open area where your weapon is pointing. Something fun to try against a white cruiser at night
Everyone finds a style that they favor, but being married to just one is almost as bad as not practicing with it.