John squints down at Ianto and the blade, vaguely realising he doesn't know how good the man is with sharp implements, before offering a slight nod.

"You can probably make a cut then rip if you're worried."

You know, to avoid having to use the blade continuously if he's concerned he might slip and stab John. Which he'd prefer Ianto didn't, since he's already got enough wounds for one trip. The real danger is that the fabric might be slowing the blood flow, which might make a huge mess once it's all pulled back. John winces and glances around, wondering if they have something to protect the room.

"Put my jacket over my lap in case it starts gushing," he says finally. Which is maybe not reassuring but... is practical.