I think it has value in an area where no-one has used it before, ie for survey work in a relatively virgin area, but if it has been used as a selection criteria by beekeepers you are going to get a load of false positives as in the Moritz paper I have posted over and over again.
the other use is for identifying hybrids which might look and behave ok in other aspects.
Wing morphometry can tell you that is bee is not Amm but cannot prove that it is.
If you select bees for Amm wing pattern and you select bees for gentleness you should not be surprised to see a correlation.
I know I am at odds with most of the Bibba folk over this but I consider wing morphometry to be pretty much a busted flush.
Kate's work strongly suggests that as well.
The people who defend it mostly have not assimilated that Moritz paper, or don't want to assimilate it.