Kydex is a durable, lightweight polymer engineered for thermoforming fabrication, and originally designed for use in aircraft interiors.
Kydex allows for the ability to heat mold directly around the knife it is intended for, making for an absolutely flawless fit.
Most of it is just personal preference, but Kydex is cheaper than leather, and the process to make them is also far faster, so price makes a difference. One benefit of Kydex is that it does not loosen up over time, like leather does.
It absolutely can, but leather also holds a small risk as well. Risk of scratching from a Kydex sheath is far higher than with Leather.
Check out our Kydex Sheath Category!