I'm pretty used to character outlines, because I like to zoom to maximum and at a certain lighting, my character looks like her chin is directly connected to her neck *O*
I also use character outlines to photoshop, because it looks better when blurred in my opinion.
But yeah, when I'm just taking screenies I turn it off LOL. I turned it off for a while but then turned it back on since I was used to lines, but I'll probably keep it off now.