Ummmmm, "What would be a better way to lock an eccentric adjustment than the means already used?"?

On the complex end, I love the Bushnell eccentric almost enough to think up excuses to tighten and loosen the allen adjustment bolt so I can see the sides of the clamshell adjustment go in and out and in and out and......oh, never mind.

On the simple end, I find a setscrew adjustment to be entirely satisfactory, and if properly designed, quite light.

The virtue of the Cannondale wedge-anchored eccentric escapes me. There seems to be a lot of difficulty with keeping it quiet, and a lot of people have had to seek technical advice to remove it.