mtothe6thpower

I've been binging playing the game and I noticed that any promoted or mounted units are unable to use Iron Longbows. Is that an intended feature? I ask since I've seen 2 different enemies with only iron longbows as their weapons in sawyers route, chapters 3 and 4. Plus when you first get Deborah she also has an iron longbow that's unusable, and Horace as well iirc.