An armourer makes leather armour and under armour for the heavy metal armours such as chain, scale or plate, unlike a leatherworker an armourer uses a great deal of cloth and has a different subset of skills. As such they often have a background in tailoring or weaving.
Armourers will have a workshop to make and sell their items, typically on commission as the grade, fit and uses vary greatly. While leather armour is much cheaper than metal, its only is high demand by those that employ their own armourers.