One my close friends run the Stauns. The concept is pretty old actually, I think it came out of iceland. I have had to do a few repairs on the trail with him. We have both put in our hours as Les Schwab boys so we know our way around a tire pretty well
I like the concept 2nd best compared to the Hutchinson style bead locks. The Stauns have a minimum pressure requirement in the tire. If you run too low of a pressure the tire rubs on the liner. It will eventually ruin the liner and pop the tube. On the 315/75r16 above that is about 4.5psi. Any lower than that and you start to get contact, wear, and holes.
The install has to be pretty meticulous to prevent debris in the tire from putting a hole in the tube. If you get a puncture in the bush you may also put a hole in the bead lock tube.
It is possible to repair the tire and bead lock system in the bush, but I would suggest learning how to do it BEFORE you venture out in the unknown wilds. Breaking the bead is the same as normal, but once your past that you have to be pretty darn careful. I suggest learning to dismount/mount the tire with smaller irons on something clean like a tarp.
One big bonus is that when you remount the tire and bead lock you can use the beadlock to push the tire beads on before you air up the tire. I suggest using both the beadlock and tire to do this...but it is easier.
All in all, if you have the money and want beadlocks, get Hutchinson's. They lock the inner and outer beads on and will keep them there until the tire fails with zero air pressure. The 2pc design presents its own complications for mounting and dismounting, but you can still repair a tire in the bush with hand tools.