We use our simple LDS in our Vertigo models. It is tested on Futaba and KST servos. Advantage of this system I see in possibility simple replace servo. It is just fixed with 6 screw. You must usually replace gear in servo after hard landing with normal LDS. It is better chance to destroy first drawbar or arm then gear using simple LDS.

Vertigo Frame2 FutabaVertigo Frame1 FutabaVertigo Frame2Vertigo Frame1