Altough not the point of primary interest, in Namibia, I have seen:
Damara (also my trackers), then Herero, Himba, and few bushman - (Apart from Damara, the rest I have seen in town).
Damara working as trackers, or farm workers is more like transcultural life style.
And in town, selling souvenirs Herero, Himba. Which is also transcultural modernised way of life.
My guess is that if you do not paritucularly look for indegenious tribes in the field, it is unlikely that you will see real hunter-gatherer community by accident during the modern safari hunting.
In modern days where the land is distributed, or owned, or managed, etc, it is likely that any "hunting-gathering" will be seen as poaching.
It might be different in ohter countries that I have not visited. I speak for what I have seen in Namibia, only.
On a separate point, I am now reading a book, which I can reccomend in a view of the interest of your question and covers east Africa:
"Black Poachers - white hunters".A Social hystory of hunting in colonial Kenia. By Edward I. Steinhart.
It is history of hunting in Kenia, starting first by hunting hystory done by local indegenious tribes and ethnic groups, and then continues with hunting in vicotrian times, etc..