Rooibus Plant propagation and growing

Has anyone had success with this plant? It’s primarily used as a tea. It’s very expensive but should grow in many monsoon type tropical areas. It’s very good and sold at expensive tea shops in USA.

It’s also used in wine making to replace sulfur dioxide, adding good flavor and antioxidants.

No, I tried seeds once, but failed (which doesnt mean much as I tend to fail with seeds a lot… ;-). But I would be very interested if anyone else succeeded!