No different than other varieties, that I'm aware of. Just follow normal cloning techniques and you should be fine. With my BBxNL cuttings, I get about 98% success in dirt, and about 99.9% in the cheapo aerocloner.

The key to big healthy root masses is scarification, preferably through a node (where a stem meets the main stalk). You'll never get a big healthy plant unless it starts with a big healthy set of roots. Search it if you don't know about it.