Garter holster. Don't put it past him. Ianto was hoping to get a closer look at that gorge, maybe hop up and fly down there or something, but most dreamers probably aren't so blasé about their unconscious Freudian desires and fears. He tries to remind himself of that, that it puts people off to treat dreams like dreams. So yeah, giant, that's absolutely why he's here in the woods, where he definitely intended to go.

"Giant. Yeah." He straightens his vest and stands a little more confidently, a little more soldierly. "I've, er, been sent to take care of it." It is something that needs taking care of, right? She does seem frightened. Hopefully he's not meant to be investigating into a giant's murder.