I don't really think this is a technique that should be used by dispatch to shave margins further. I'd rather keep it in the back pocket for when something extra is needed to stop before going off the end because the runway ain't what I was expecting.
Except for a few hold-outs who apparently:
a. Haven't been able to reconcile the aerodynamics
b. Slavishly adhere to manufacturer recommendations only
c. Can't believe that (if it's a fact) somebody would've been recommending it already
OR
d. prefer a free-floating control column under braking as a safer form of non-commital (with concessions for some aileron into any crosswind)
...............then we have some believers.
But I personally wouldn't leave it until the end was looming fast BEFORE deciding to adopt this braking technique (i.e. suck the stick back into my gut and expect a miracle turnaround in my stopping power). I'm instead guessing that it's best used early and throughout - to avoid those "looming situations"