The Herr Doktor apron was inspired by the Salvation medical bag as a cheaper and different way of outfitting a battle surgeon. It's quite easy to picture someone up to their elbows on gore running from one casualty to the next causing terror wherever they stop.
It's also inspired the vambrace kits with potion bottles and scalpels on them. It might even be time to revisit the Herr Doktor design because when we first came up with it we didn't have the Scalpel throwing knife. One of those and a couple of bandages strapped to the side of the pockets might be a worthy addition to the set up.