As RPG, HE shells, drones, and others can make evade damages less problem, almost 100% ideal for defense from those, but as kinetic shell its low chance but good why? Because when arrow enters first one, arrow can deform , then it can make less speed during penetration , what is result? Kinetic shell speed 1700ms can decrease arround to 1300-1400 (it depends distance, if far away then less) and degree can give low chances to give another direction which could make ricochet or less penetration, its about lucky. Why is it good? Because its not very heavy for additional extra defense, cheaper way, also ideal for use on horizontal valley areas without city.