I've hit with a ton of LD shafts. Only owned one (Tiger X).
I'm not going to argue the science of the tip hitting the cueball--I have enough engineering/physics background to actually understand that.
What I will argue is whether that helps a player. Doesn't help me.
CJ Wiley recently argued on this forum for normal shafts because of the increased squirt of the cueball.
No matter what you do, there is going to be some deflection. Most of the people I have known who get bitten by the LD garbage are always chasing the best shaft, which takes away from them chasing their own best performance.
dld