I dropped in Mikes vocals yesterday and tweaked the demo mix a little bit. I pulled the requests for guitars and real drums, as I think the song works as is (I might change my mind about real drums, but we'll see). But I don't consider this to be the final mix, as I usually start mixing from scratch once everything is in place, after letting it sink in for a while. That's why I filed it under "Demo".
The vocals are in sync. Im listening through earbuds only but it sounds really good to me.