Black Locusts Flowering in Mid-Hudson Valley

My home, and hive, are surrounded by woods comprised primarily of black locusts. Before having bees, of course, I never realized that they flowered at all -- the trees are very tall and straight, and the flowers are in the topmost branches.

Over the winter, I was anxious that they'd flower before I had my bees. Well, they're flowering today, and I hope the gals in my little nuc are aware of it, and make the most of it over the next 3-4 days, which are supposed to be almost perfect.

Has anyone tasted black locust honey? It's apparently supposed to have something of a vanilla flavor. Is that true?