I have them. Just recently drove them in a thunderstorm. Didn't leak at all. I told my wife that the factory doors actually leak more than these things. Wind flap is only a problem for me above 60mph. A neat trick is to turn on the air conditioner with the 'recycle' button on. You'll notice the rear windows suck in. This helps with the wind flap.

 

I'm really looking forward to buying a set of these, one question, do you think you could go through a car wash with these?, I wash the jeep a lot , either way I'll be getting them I'm just curious.