How come Aquis can choose to be barbs? I mean...you wouldn't exactly think of either Greece or Rome as of barbaric cultures. And seeing how heavily Aquilonia is influenced by those two things, it made me wonder. A Roman barbarian wtf? A Gladiator maybe? Are there Arenas in Aquilonia? A mercenary? Wouldn't he be a Cimmerian then?
Also should barbs sneak. When you say barb, the last thing you connect it to is sneaking(unless you played AoC ofc :P). They are highly Honourable and courageous people and sneaking is everything anti barbarian. For example-could you imagine Khal Drogo(Game of thrones) sneaking? I can't. And don't say Conan. He rarely, if ever sneaked. What he usually did was that he took back entrances and such. That's not exactly sneaking.
Corollary to that: should they be able to use medium armour? I mean hides are usually barbarian only Armour and hides would be medium armour(pretty sure). Plus as a fill in for the removed ability to sneak.
In short: BIG weapon != sneaking(imho)