AD&D Bestiary

Has anyone here used, or own, the Adventures Dark & Deep Bestiary? How easy is it to use with ACKS? How different are the stat blocks (I’ve never read any of the Adventures Dark & Deep books)?

I have it. I haven’t used it yet (still updating my encounter tables with monsters from Tome of Horrors Complete), but if you know what an 1e AD&D stat block looks like, it’s very similar.