Anybody use RainX or other products?

[ma4t]

I have used this and similar products for many years. I really love using it here in the midwest because we get a lot of rain.

I used to like to drive "zippy" and at some speeds windshield wipers don't work well. So I started using RainX. I love it. I'm just wondering if I'm saving any drag by not using my wipers.

So, is anybody using these products? Do you think they help at all with aerodynamics? My uneducated guess is that since I'm not using my wipers on the freeway, I'm decreasing drag (however slightly). Plus, I like watching the rain fly up the windshield.