Well, I just used it in Multiplayer.
My Hatty did not had any hourses near by and 2 of my neibors were Mastas.
Building there skirmishers and thinking they are safe.
I got Masonry form hat, Ivory in fat cross and thinking, what the hell let's beeling to Constraction.
Mixture of Cats/Elephants and a couple axes did the job. Opponent was sitting with 4 skirmishers per city in cities thinking himself safe.