Rear windshield or no rear windshield-TEST

I'm experimenting with no rear windshield. A buddy said he likes it way better. His theory is that the rear is more to keep mud out but holds dust in as it has no way to escape out the rear. My wife and I have noticed in very dusty conditions when we turn around to check on the kids that the dust is swirling back there and seems to not blow on out. Kinda makes me think my buddy is right. I'll let ya'll know after this ride as I'm sure with all the traffic we'll have plenty of dust to test the theory!