Anna and Uni? Haven't thought about them in ages. Started out as villains in the original manga, but when Shirow wrote a follow-up, their poularity motivated him to write them as dubious "good guys". The slinky lil' minks found a legal loophole that allowed them to join the Tank Police.
Back to M'Ress, here's depiction of the comm' officer wearing an alternative uniform, pants with open toed "leggings".