I bought the shipmast black locust this year, so I shall see how that grows. Though I was disappointed that it was grafted on just some ordinary rootstock. Never occured to me that they would graft it, kind of defeats the purpose.
Various little stands of black locust in the countryside around here, remnants of ccc planting them back in the day. Alot have borer problems and succumb to that, but seems like it would be one of the best pioneer species to plant.