@Lemming: Yes, good list.
Ideally, hired swords should only be used in those settings that they were created in. This is not in the rules or listed in any FAQ but a Khemri Hired Sword really doesn't have a place in Mordheim, unless you allowed a Khemri warband but when you do things arise due to them being unofficial.
The list noted in the Watchtower is not official (sorry Cianty).

It must be noted in a Rules Review for that to happen. Of which we are slowly working on one but we are working on it. A few things have been answered but there is plenty more to work on.
The official listings have always been in the last Rules Review and the one Merchant is a sore spot on trying to figure out what to do with him as really, new skills and etc need created for him due to the khemri stuff he can get.