Hello Willowguards!
While waiting for version 1.2.6, we fiddled a little with Steam's internal workings and finally activated Steam Cloud Saves for all y'all, with no need to update anything at all. The Cloud Saves should be active for everyone by default, although you may have to actually go into the game and save at least once for them to properly propagate across devices.
Let us know if the saves cause any weirdness anywhere!
(Image: ever wondered who "N" in all of those tutorial area notes is...?)