I would tend to agree that on a herd of young or strong-willed cattle, a Border Collie won't do much. They were bred to work sheep, everything about their mannerisms reflects on that. In order to have a Border Collie be a truly successful cattledog you will most likely have to breed out some of the things that make a BC a BC in the first place. Eye, for example, won't get a dog anywhere with most cattle. Would you consider it ethical to be breeding that out or lessening it, so the dog would be suited to work cattle? Keep in mind that not many cattledogs can also work sheep and poultry, because most are simply too grippy and aggressive.
I guess I don't understand the point or "cattle bred" borders, when there are already many breeds that are great on cattle and few that are as good on sheep as the Border Collie. Why not go with one of those breeds if you want cattle dogs, instead of changing the border collie?