I absolutely expect you to, but you do it as any alignment. My experience of Retep have been to blend in and not try to ruffle feathers if he's scum, ergo, makes me think he's town at this stage
Please show more respect to my scum game, please and thank you.
Honestly, it varies. Most of my play, town or scum, is ultimately dictated by my faith in being able to prove that I'm town come hell or high water. For instance, in Kingmaker, I was content to post whatever because I was Kingmaker and therefore confirmed as soon as I claimed. It's one of the reasons I hate being pushed Day 1 when I'm scum (I mean, I hate it in general, but) because the less of the landscape you know, the less confident you're going to be that you'll survive claiming once the pitchforks are sufficiently sharp.
I also tend to not get mislynched, though, so I dunno. Maybe there is a tangible difference to how recklessly I play when I'm town with a role that makes me feel secure vs. town with a role that makes me feel the need to shake things up a bit more. Or maybe it's just that the scum QT feels less inclined to shoot me at Night when I'm, y'know, in it.