Works for Me......
Works for me as advertised.
There's no CofG effect as the nose-down pitching moment due to an effective weight-shift forward (due braking) keeps the nose-gear pinned. It's taught in the military - at least it was when I went through advanced flight school.
It effectively increases the MLG footprint and weight on wheels - and so stops the anti-skid from cycling excessively. The end result is much more effective braking - particularly on slippery runways in the wet.
I recall seeing a study on aquaplaning where it was a recommended braking technique.
Airbubba suggests that it's an effect that cannot be scaled up to heavy metal. Don't think so.........
And it's got nought to do with aerodynamic braking because that's all about holding the nose-gear off...... and generating some aerody drag.