Saw it demonstrated on the Trident and eventually tried it- made some fantastic landings as the Oleo movement was measured in inches which normally meant a firm landing.
A few years later I used it all of the time on the DC 9 - 32/33F/34/51 all had different characteristics but again worked a treat. Only downside was that when the ground spoilers came out it dumped the aircraft. A few guys would have a spare hand on the lever to slow their deployment.
Never got it wrong but was asked by a young captain to stop as the late flare scared him.
The trick on the nine was to close the throttles early, trim back as you could run out of elevator especially on the 51, late heave and at the requisite moment stuff the stick forward and not forget to break the nosewheel landing (forgot that once!)...
Sadly rarely experience a decent landing as SLF nowadays.
It's about training, ability and had flying frequency so you can forget it nowadays.....