Yes, very interesting indeed!
I know for a fact that they are not uncommon in the Caprivi strip near the Botswana border, seen them.
The thing that puzzles me is how much animals have been driven out of their natural occuring areas and had to be relocated elsewhere to ensure their survival. For instance the Black Wildebeest in the early 20th century, as well as the springbok which was not that uncommon in the bushveld or highveld seeing that they were even full on numbers on the springbok flats (hence the name) near Bela Bela(Warmbad) and Groblersdal etc even stretching into the escarpment at Belfast.
I once read a publication from a very interesting occurance that happend at Pienaarsrivier, just north of Gauteng on the R101. In 1960's many black and even white inhabitants were weary of a couple of male lions still lurking in the bushveld on the springbokflats. Many people thought them to be driven out of that area and only to occur naturaly near Vaalwater and the Waterberg Biosphere. As it is this lion terrorised and even hunted humans near Hammanskraal and Soshanguve. It was nicknamed the "man vreter van Pienaarsrivier" meaning the man-eater from Pienaarsriver.
It was eventualy shot dead and was thought to be a lion that had escaped from the Circus or a nature reserve of some sort,but further investigations led to the conclussion that it was a native inhabitant of the area, one of the last remaining of the area, it hunted the Kudu near the present location of the Carousel casino, these Kudu are still there to this day on, not in a gamefarm or reserve, but free-roaming (fences was erected by the casino recently). I have seen these Kudu a number of times when driving the R101 to Bela Bela.
Hunters and poachers getting to them? I realy don't know. On that same road just after exiting Hammanskraal we saw an Aardwolf run across the road one night at 7pm in June. There are many termite mounds for those who know the area well will know, and its encouraging to see there are still some animals that have evaded the constant "sustainable development" of humans.