Are you sure about this?
 I just checked vanilla Fallout 3 and they don't seem to have armor.
  I just checked vanilla Fallout 3 and they don't seem to have armor.   
 They use the "EMillsBazWhoreBrothel" which does not has armor and only has a knife in their inventory:

The male raider there uses "EMillsBazRaiderBrothel" which also does not has an armor, and only has a Flamer and ammo for it:

The one that has armor is the brothel's "Madame", which uses "EMillsBazMadameBrothel":

 
	
 
 




