Thank you LaughingLeader, this has been incredibly helpful!
I have a few more questions concerning this method so I should be a bit more clear now.
The skill in question summons a different unit based on the character race and sex (I neglected to mention this in the original post).
I assumed the 'Template' section of the skill changes what summoned unit appears.
Using your example from earlier:
SELF:IF(Tagged:ELF):ELF_STATUS,100,1;
Would I need to change 'ELF_STATUS' to be the summon template I wanted? Or should I go with your second example where there are technically more than 1 skill and the story script checks for that?