For battleshock wouldn't you be better off with the skinks there anyway?
Scenario 1
1-2 Wounds, lose 2 skinks, on a roll of 4+ loose 1-3 more, still have all your salamanders vs have a wounded salamander but lose nothing.
Scenario 2
3 wounds, lose 3 skinks, on a 1 lose nothing else, on a 6, lose 4 more skinks vs loose a salamander, on a 1 lose nothing else then on a 6 lose the rest of the unit.
Scenario 3
6 wounds, lose 6 skinks, on a 1 lose 2 more, still have all your salamanders, on a 6 lose the unit vs lose 2 salamanders then lose the last guy on any battleshock role.