It's been a long time (like 3yrs) and a lot of work, but I'm happy to say: Evolver officially has working rollback netcode!
I still have a lot to do to improve performance but the core functionality is in place and playable. There is ranked matchmaking as well as pvp lobbies (a room number is generated when you select your character that you can share). Additionally, if the game desyncs, it will give you the game state for the desync: feel free to post a screenshot in the bug-reports channel and I will work out these issues as they come in.