When the tongs first came out, there was only the back breakers (pilstum type) available.
There is no shortage of proof of what these can do, specially in the hands of a person who has done a 2 day snake catchers co****, and only want to make a few bucks andbignote themselves.
The midwest gentle giants were not around in these days.
I was a ferocious opponent of these tongs and even though i have owned a set for he last 10 years or so, and i have them swathed in neprene and gaffa tape, and i keep them in the car,out of the 100s of snakes i catch i have only seen the need for their use in one or two situations.
unfortunatly they were in the car at the time and i made use of the hooks instead.
I have no proof of the gentle giants doing the same sort of damage the original pilstrums do, but unfortunatly the "proof" of damage might not show for day or even weeks after the capture.
Broken snake ribs are very fine and damage isnt evident straight way.
You can release your snake and in 2 weeks they will die of septic injuries form the injuries.
Like i said, the gentle giants are difinitly the better option if you must.
But only in experienced, proffesional hands.
Certainly never need them down here.