Jon, I think honey locust have longer pods, but I hunt property that is full of black locust. I have seen them eat black locust pods, but mostly like other have said, after a frost or late season when other food/ browse is less available. The same is said of osage orange (hedge apples), they will concentrate around these trees and eat the balls after they have been froze solid, especially in sub zero weather. I'm not sure of the nutrionla value, but during cold weather deer will eat all kinds of stuff to keep digestion and bacteria cultures going.