To seriously answer this question, no matter how much superior the German bow is (in anyones opinion or by technological advances), the French bow will ALWAYS exist for two reasons. 1. Anyone who gets there start on cello, will almost inevitably play french, becaus it is very similar to the cello bow hold, 2. some thing like 80%(thats my guess not fact) of elementary, middle and high school orchestra teachers are violinist, violists or cellists. And they general have never seen a German bow before, and if they have they probably don't know how to hold it. This is why there will always be a need for the French bow. Personally I play both and am proficient with both, but the got to bow for me right now is German.