While it remains to be seen, I can't imagine them having much impact on our activities in the Berg. The Free State - Lesotho border is definitely what they will focus on for now, see:
www.vertical-endeavour.com/drakensberg/20-security/192-lesotho-border-to-be-patrolled-by-sandf-once-again.html
The SANDF has previously patrolled the Drakensberg anyway (currently it is a special police unit). The only impact it had on us was that they used Thuthumi Lookout Hut, Wilsons Cave, Halfway Cave and Thamathu Cave - and they were not to happy about sharing these with us, as was my experience more than once. But they were friendly for the most part and their concern was the Basotho - they didn't worry about hikers on the escarpment (they are there to protect South Africa, after all). Actually, the Lesotho Mounted Police are more the ones to think about when walking around up there, if you every encounter them. Theoretically they could ask you to present your passport, though they don't always do that.