I used a pair of inverted forks for wheel truing for years, one was standard and the other was spread out and had the dtopout slots enlarged to take rear wheels. I remember one of them came from a black Ross, the other one was chromed and was pretty bent to begin with, having "survived" having a front wheel touch down while the bike was mounted on the trunk rack of a car that was backing out of a steep driveway.

I sometimes bias a rear wheel's dish to the left side when the wheel is going to be of marginal strength for the anticipated usage, or to put a badly compromised wheel back into service until the owner can afford a new one.

My CX bike in particular has a rearward weight bias and has a history of bending rear wheels when I manage to "save" a slideout out on the course.
A 1mm bias to the left of perfect dish makes the wheel stronger, so I can get 2-3 years out of an $80 Open Pro rim on average. I previously used 15/16g spokes, and so also switched to thicker 14/15g spokes.

I have to say that I've never noticed any effect of the dish on how the bike rides, but I could easily adjust the frame's rear dropout alignment to compensate for the skewed dish.

My bike's rear spacing was originally 114mm, with a 5-speed Pellisier hubset, but I've increased it to 132mm in the most recent adjustment and simply added 2mm worth of washers to the left end of the current 8sp Ultegra hub's axle.