I am also in the double bat category but it is difficult to handle on a domestic. No issues at all on a longarm. While so many recommend wool, my personal preference when going for warmth is a layer of 80/20 with Hobbs Polydown on top.
The warmest and heaviest quilt I own is double batted but it is an old wool army blanket my DH picked up at good will for like $2 and a layer of Hobbs polydown over that. The thing weighs a ton and it is so very warm. One thing about it I don't like is that scratchy wool army blanket is still scratch even through the cotton backing fabric. But that is not an issue when it is layered on my bed with other blankets and a sheet between me and the scratch.
Also it gets pretty darn cold here in the northeast and I also have multiple quilts piled on in the dead of winter. I also keep the house really cold. I sleep best in a very cold bedroom with lots of quilts. My normal winter pile on is sheet, down comforter, quilt with 80/20 batting, then the aforementioned double batted quilt. But this winter I left the double batted one hanging and used the scrappy log cabin one I just finished that has a poly batting. There were plenty of nights I was tossing stuff off because I was too warm!