Nope, if the ride height is in spec, but the camber is out, it's best to slot the strut to allow for camber change.
When I align any car, if the camber is even on the edge of specs, I will adjust it to the center to get the best tire wear. On early Eclipses, slotting the struts is necessary, on later eclipses, installation of aftermarket adjusters is required to allow adjustment.
The fact that you have never heard of it before is due to the fact that most alignments are not performed properly. A proper alignment should be performed in such a way that the desired settings are achieved at all four wheels, with the exception of special situations where there are tire wear issues because of differing driving habits. In this case, you need to take each car on a case by case basis. Too many 30 minute alignment places out there are ruining a very detailed operation.
EDIT: Oh, and there is nothing at all wrong with doing this operation, in fact there are instructions on how to do the adjustments in many alignment publications. There are no adverse effects by slotting out the struts, it will not cause ANY problems.
Rags