That is an interesting method! But in our case we prefer not to lower the ph at all only to raise it. I don't think there is any scenario where we are actually wanting to suppress the pH because it is too high.
We let the ph get as high as it can during the day time and then attempt to maintain that ph Stability over the night time hours so that every day and night it is always the same (high). I could see your method being useful if we had the opposite scenario (we were wanting to lower it because it was rising uncontrollably or something to that effect).
Could also see it being helpful to 'stabilize' (not necessarily stabilize-high) the at-home pH levels of a smaller reef aquarium with less consumption (not possible to dose enough additives to keep it stable-high).
I guess I should have clarified though that we want to stabilize it at a high level, rather then just stabilize it period.
I've looked to keep my pH stable. I used to elevate beyond 8.3, but found too much abiotic precipitation. 8.2 seems to be a sweet spot for me, as I'm not trying to accelerate growth.