It will make a difference, although little one, but for aerobatic models it's not a big deal.....Tip stall problems are more serious in slow flying, underpowered models (like most trainers or "heavy lifters") that when the plane stalls, you don't have much engine power or control authority to recover, and the plane must recover for itself. Now in an aerobatic plane, just add full power (assuming it has adequate power for aerobatics) and it recovers right away....In 3D flying, like on a harrier, the wing is fully stalled, and yet the plane still flies just on the prop thrust. No matter if the tip stalls first, the plane still flies and is controlable......

So i think the addtional hassle is just not needed.

My 2 cents......