Have to disagree with compressorstall slightly. The OEM book does not specify whether or not to say it.
When one size-fits-all guidance is impossible, Airbus need to provide a wider solution. So that different techniques can be used without going against the book or having to modify it. I think that's exactly what we see in the C/L layout.
There is a reason they changed the display on PFD at one stage, and the QNH is painted with the color blue. While verbalizing the letters is unnecessary and thus wrong (as opposed to simply not correct) at some places, elsewhere it might be crucial.
Similar to BARO / MDA / MDH in the minima box of FMA.