Where they fail is popping off the servo horn. (not slipping on the set screw) You would be much better off taking a threaded end and soldering it together, wrapping it with wire. Then you would have a clevis on both ends. Z bends are no problem with a good pair of needle nose pliers, I will show you one day at the field.
Even though no personal failures have been experienced, The reason why such rules exist in the rule book, is because they do fail. I have had it happen to me twice on throttles.
Kahlog, being one of my flying partners, knows how little problems I have with losing aircraft. These little details add up to making your planes last longer. I would not trust thousands of dollars to saving a few minutes and a few cents to a control surface termination that is known to be sub standard.
Please do not think I am being condescending, I would just hate to see anyone lose a plne because of this.