It takes a domestic hog on average about four weeks without human contact to become feral, so why wouldn't this style of hunting be possible? I'm sure a feral hog with cutters intact could be just as bad as a half Eurasian boar.
. Because a domestic hog doesn't have as much of the fight or flight mentality, years ago when this style was common practice any hogs that busted out of the group were killed off only leaving the ones who would rally up, same with the cattle, then deer hunters wanted to come in and lease up all the land so they could "manage" the deer and that was the downfall of the days of working hogs...