Topshelf; I did not take off that piece, but based on the rain and washing it does not seem to cause any issue, but thanks!
AzNMpower32; The down wipe totally clears the area like a squeegee. Now with that said, there is a slightly bigger area outside the wipers on the right of the passenger side. So it is a tad shorter, but not a issue at all. The functionality and clean look more then make up for it.