Strategy, probably. I think scum in general think more long term (and should in private) because their wincon is long term. A town can win in like 3 days by lynching scum so they've got to look at the game 'in the moment'.
For 3rd party, I don't think there's a proper way to play it. Survivor is basically as long term as can be, SK is independent to person. Like for example, as SK I'll question if I even WANT to make a kill (actually I've done this as scum...) because I don't want the conversation to towards to why the second kill exists. Instead of this long-term plotting of "who has to go because they're a threat to us winning", I'm thinking of whether it even makes sense for me to bring attention to myself. Some people like to play SK off as Vig, so I guess gambits in general are more tactical.
The end-all is scum won't take a risk that gets them exposed a day from now or so. They're in it to win and they'll make plays that fit when they can win.