Ianto is protective as fuck. Clem is also not his favourite person.
Clem was an overall asshole to Ianto and by this point he was pretty fed up with his shit.
On a side note, the way Jack clings to his arm almost instinctively makes me think that Ianto holding him like this when he wakes up is a common occurence.
Yeah, the whole queer thing was really horrible. I’m pretty sure that’s the most outwardly upset we ever see Ianto get, other than during the Lisa incident. Couple that with the shooting of his boyfriend, and you get one really pissed off Ianto.
Oh yeah, they totally have a routine by this point. Jack seems so relieved to have him there to hold on to.