I don't really mind the black bars actually, as long as I'm getting the correct aspect ratio and my GPU is not working any harder than rendering 1080p. I had just assumed that if a game offer 16:10 then it would fill the screen, and when I saw black bars I thought something was wrong and I kept quitting and fiddling with control panel settings. At least now I can rest knowing it's working how it's meant to.
Yeah, I've got used to them myself, it's better than the alternative of having to select a 16:9 resolution and upscale, which would be blurry.