Some folks even claim that removing those scoops helps stop some of the buffeting you get on the bike when in dirty air.
I tried them backwards the first autumn that I had the bike. They got in the way of my feet, so I put them back to the original position and ordered up the "FLAP, SIDE COWLING" that are listed. They do a much better job for riding in cold weather. Then I put the scoops back on for the summer.
But, for $41 + shipping, I'd do all the other stuff first and then replace them when/if I had the money. They aren't all that necessary.