I'll have to look into it!!Have you thought about 3M security film? Applying it on the inside and outside of the side window glass will make it pretty hard to break, and will have an appearance no different than your regular windows.
And you can see totally through it? That sounds like a pretty good deal!Daniel Shaw had his 3M safety film installed at a place in Tulsa, but I can't remember where. Probably either Thermofilms or US Window Film.
His is the 26-layer variety, 0.8mm thickness, and it survived the RFD of the El Reno tornado without breakage.
The place in Tulsa wanted $875.00. It's clear. I've never seen it stop it from cracking, just stopped stuff from going completely through. But that in itself makes it almost worth it.Keep in mind that there are different rules in different states regarding how dark your drivers door and passenger seat windows can be. It generally only cost a couple of hundred bucks to have it done and most 3M dealers will install it for you.