Also, I've just built an asymmetric lefty wheel. For a modified Cannondale lefty. As part of a fatbike. The fork leg is moved further to the left by use of custom clamps. Then you dish the wheel back to the right. Before the custom clamps were availible, a guy simply dished the wheel for clearance. So the center of the tyre was no longer directly under the head tube. Reports were, that it handled OK.
Also, I've just built an asymmetric lefty wheel. For a modified Cannondale lefty. As part of a fatbike. The fork leg is moved further to the left by use of custom clamps. Then you dish the wheel back to the right. Before the custom clamps were availible, a guy simply dished the wheel for clearance. So the center of the tyre was no longer directly under the head tube. Reports were, that it handled OK.