What’s wrong with the traditional hybrid holsters?
1. They don’t fully protect the trigger. You can clearly manipulate the trigger even while the firearm is holstered. TACRIG holsters have a hard shell front and back the block any access to the trigger.
2. Retention is generally not great.
3. Traditionally made of leather. Over time leather will degrade and lose its shape. Many negligent discharges have happened because the leather “caught” the trigger while being inserted.
There’s much more. Please do your own research!