A. the men in black, the organization runners, are members of one of the fractions battling outside the island.
B. the claymore operation is an experiment to create stable soldiers to fight against awakened being like creatures who exist on the battlefield.
C. the MIB decided that males aren't suitable (so far) to this stage of the experiment.
D. if the MIB were male claymores, then they wouldn't need to research anymore into creating stable soldiers.
the MIB are probably battle scientist, they might have some battle ability, but we have seen that they can't fight even a normal claymore.