Several colleagues of mine told me that the sound of their carbon fibre bows would be rather weak. In direct comparison with wooden bows it got clear quite fast that with my Arcus Cadenza is was just the other way round. The history of music is full of examples where a new technology has replaced an old one, simply because it was better. I believe that "Arcus" is a good candidate for that.
My wife Catherine Mirgain is especially happy about the lightness of the bows and that they are still at least as powerful. This is an especially important factor for violists in an orchestra, for example the Wagner operas. I totally agree with that.