Summoner do fine in Coil, our BLM goes SMN sometimes and actually prefer to do that too.
For Turn 1 SMN can dot both CAD
Turn 2 and 3 nothing special though, since it's all single target fight
Turn 4 our SMN dot both soldiers and Knight so we can kill them faster, Titan-egi is use to tank the last rook just to makes things easier for our OT.