I find this all so confusing. I grew up with locust (not honey locust) trees and the cattle and horses preferred locust leaves over everything else. I would stop and feed tons to my horse and any cattle. I would pull down branches forever and clean off all the leaves I could reach for them. I used small branches loaded with leaves as a teaser when halter breaking steers. Now, 35 years later I am learning they are toxic. Very strange.
Our locust trees were black locust I believe. They had white flowers.