I made a request for the previous title, and @STiNGERR has already made a trainer for it, though, I’m not sure why would you want a “duet” trainer for both these games ?
Even though SW2 is using the same previous Road Hog engine, the game’s exe, and .DLL injection might be different, though we can’t say this for sure. So let’s wait for the game to first get released.
Edit: “Never mind, I think I misunderstood you”.
As always, a separate trainer/MOD for a game, is more preferable, IMO. Here’s the previous trainer link, just FYI: