The idea of fewer parts to fail flies out the window once we consider forming practices, material draw, and applied forces. There are loads of holsters out there from a range of makers with more hardware than a belt wedge based holster that haven't failed. There are belt wedge holsters that have flexed in a manner to the point of cracking. Choose based on what best meets your needs. A belt wedge will typically offer less rotation of the grip but will create a little more space to establish your master grip. They're less favorable for smaller people, in most cases. The trigger guard bump behaves more like a claw but has some limits as well and will typically need a muzzle wedge to assist. The Tenicor Velo is a prime example of a good combo.