I've been beating the bushes for information on this topic and thought I'd give an update.
It would appear that their are some gräoid hound hunters in southern Africa, but most are running these dogs for themselves only.
The PH's appear to be primarily using trailing hounds and jack russells.
It turns out that there is actually a Southern African Houndsmen Association, and in various quarters of the region hounds are being used for leopard, lynx (caracal), serval, genet, bushpig, blue duiker and bushbuck.
Wade Lemon's scenthounds are currently hunting in Zimbabwe. There are now two packs of hounds hunting. One with Tristan Peacock and the other with Theo Bronkhorst. Both pack have been very successful.
Roy Sparks is houndsman to several different PH's and safari companies including Ratelfontein PGR (Karoo), and Burchell PGR (Eastern Cape) who are doing Namibian leopard hunts.
Sandhurst Safari's is offering leopard and lynx over scenthounds in Molopo.
Cornie & Elaine Coetzee (BERGQUELL and SAFARIHOEK, Namibia) offer leopards over hounds.
PH Johan Strydom is guiding cat hunts over Fell Hounds in South Africa.
Gary Niles of East Cape is houndsman for Barrie Duckworth's (Mokore Safaris - Harrare) leopard hunts.
Rick Lemmer and Darryl de Lange (H&HA - South Africa) offer bushpig, caracal and jackal over hounds.
Willem Roux (Erindi GR - Namibia) is hounding leopards.
Dave Davenport (Leopard's Valley Tygerkloof) is guiding leopard hunts over hounds in Zimbabwe and Namibia
And Lastly,
Gavin Lipjes (Xosha - all the countries of southern Africa) pursues numerous species with hounds, mostly Gascogne's.