Nick, 2 long and flimsy controls? What about 2 steel cables running the whole length of a very long tail boom, fretting their little hearts out on the fairleads
You're right, but no tail system is perfect, the notar can take a lot of damage as well, which a normal system might well not absorb, but it is also very easily damaged. It is very much a case of horses for courses.
But as you said earlier, they do look pretty cool.