First Post! And this is where I have come to directly. Owning a Jeep Gladiator I know too well the issues of a bluff plate of upright glass, with 4 screens in 12 months. I am hoping ExoShield (
https://www.getexoshield.com/installation) will create one for the Grenadier - they're an awesome bit of kit that I now run on the Gladiator until the Ineos comes along. And for the past 8 months I've had some knocks but no chips or scrapes.
That video is of a Gladiator, but they make them for other makes as well. If not them, then hopefully someone comes along with a kit for it. The Exo for the Gladiator is $AUD485 delivered in Australia, but that includes $185 in shipping!