From the looks of the Magura TT brake lever, it seems that it was developed to be used with a flat basebar, meaning no upturns by the brake levers. But I also see these levers placed on the 3T Aura on NP3s/P5s and also on the new Shivs with their upturned base bar.
So my question: Is there really a considerable difference between what type of base bar you are using?
For what it’s worth, I much prefer the look of the flat base bar end, I think it would be more aero, and my riding style/terrain is perfectly fine without the additional grip of an upturn.