What is your take on the mounted crossbowmen we see in The Sworn Sword? Are they normal crossbowmen who fight on their feet and only travel by horse or could they possibly be Real mounted crossbowmen armed with a type of cranequin crossbow suitable for fighting from horseback?

Mounted crossbowmen were real. According to Ralph Payne-Gallwey, they were more popular in Spain and France, whereas the English had quite a lot of mounted longbowmen. In terms of how they fought, I imagine it was probably more of the former – as with the dragoons of the blackpowder era, the mobility of having a horse can be hugely useful in terms of getting your ranged infantry to the best terrain first. But I imagine if for no other reason than self-defense, it would be useful to use bows that could be fired and cranked from the saddle.