Indeed they do look good.
However, i found that for the L'Estranger, if you're going to pull out the revolver, you should either be already near the enemy, and have killed them and taken their weapon for metal before you've been fired at by 5 other people on the enemy team.
I haven't had a go at the Sydney Sleeper yet.
Eternal Reward is pretty fun, but if you're on an all-talk server, like me usually, then it's quite pointless to have changed disguises so quickly because if the person you killed has a mic, then they can just blurt it out that you're a spy and you have their disguise on, as you cannot change with a disguise kit, you're gonna have to be fast before someone hunts you down.
The black box is a great side-grade and i'm loving it to be honest.