I wonder if the Cawdor update will delve into female models. It'd be a nice addition, but then again the usual Cawdor get-up is kinda...unisex?
That would be because Cawdor gangs are unisex. Cawdor society is gender segregated and women don't fight.
The only female Cawdor fighters that you will ever see in the Underhive are ex-House members, either as individuals or entire gangs. It's doubtful that these are even close to a large enough percentage of the Cawdor population to be represented beyond anything other than a named Bounty Hunter/Hive Scum, so don't expect any female Cawdor models beyond that unless they decide to re-write the background in House of Faith (or whatever it's going to be called).