"Maybe..." Ianto replies, flattening himself out of the way as the bandit swings at John. The stun gun might be useful in bringing the bandits down but it's not very much use in defending himself against the attacks themselves. None of his training is, really. The only reason he's got any decent training with his gun at all is the firing range in the Hub and the fact that Jack liked to use it as an excuse to flirt.

They've got to get through this first, Ianto thinks to himself, as he waits for John to get the bandit close enough to him so that he might be able to shock them somewhere.