All the studies that have been done say that the typical values of concitiy do not result in wear issues - that things such as toe in have a much, much greater effect.
To try to explain why this may be so, think of what is happening when a tire has excessive toe in: Not only is there is a sideways force being generated, but the tire is distorted from the straight ahead position. With conicity, there is only the sideways force, and no tire distortion. Plus the amount of force generated by toe in is much. much larger than conicity values.
Don’t forget, it is slip angle (tire distortion) that is causing the multi-ton vehicle to change direction. With conicity, the change in direction is relatively small over the same distance.
Now I am sure that vehicles with a pull will develop some wear issues over the long, long haul, but that is due to the steering correction, not the conicity level itself - and I am also sure that the tire wear described in the previous sentence will be completely obscured by the amount of tire wear that occurs during cornering. In other words, the wear will be there, but it will largely be undetectable.