So far so good! Aside from a few minor annoyances and one showstopping bug (that got squashed quickly), I'm having a blast figuring out how to play.
So far I've played 4 games with 1 victory (that maybe shouldn't have been one). I've tried to keep a balanced build between the two sides, and that seems to hold out fairly well. I'm enjoying Skyward.
As to the game I won, somehow I messed up and couldn't get materials in to build military units fast enough. Both factions got turned into bandit towns. I had demis on the field and they made sure each side controlled at least one tile. I think that if you lose all your town centers and don't have the resources to build a new one, then the game should be over. I didn't really "survive" to the end.