Played with some orientations for the screens. The Insight has very little real estate on the dash, and none of them felt particularly great.
The first one doesn't block as much line-of-site as it appears in the picture, but anything that obstructs forward vision probably isn't a good idea:
The second is better, but mounting will be somewhat tricky.
The third is the one I'm favoring as it mimics stock mirror locations and obscures virtually nothing, but the screens may end up very distracting at night. At the very least I'll need to be able to turn them off.