When I bought my Audi Q5 a few years ago I took the bait and had the dealer apply a windshield protectant that would, theoretically, reduce rock damage and improve visibility in the rain.
It also offered OEM replacement insurance for severe windshield damage.
At $700 I thought it was ridiculous, but did it anyway. To my surprise, the rain visibility improvements were dramatic (likely better than if I were to apply RainX myself) and, within about a month, I got clobbered with a rock that put a big crack right in the middle. The policy replaced the windshield with a brand new Audi class panel.
So... are people doing this with the X? I shudder to think of the costs of replacing the X's windshield.
Does you insurer offer anything specific to address the X's windshield? Mine is USAA, but I haven't asked yet.
We pick up our new 75D today! ;)