And if you do anything but heads-out, kinda defeating the purpose.


The traditional reason for a NDS radial is to cure/avoid NDS spokes breaking from fatigue.
First/easiest thing people tend to do to avoid/cure spokes breaking from fatigue is to increase tension.


And heads-in will have a lower tension than heads-out, thereby contradicting the traditional purpose of a NDS half-radial.


If you use a decently flexible spoke calculator, you can check the impact on heads-in vs heads-out by changing the position of the NDS flange.


Shift the flange half the flange thickness further out, and it'll give you the tension balance of a heads-in build.
Shift the flange half a flange thickness further in and it'll give you the tension balance of a heads-out build.