I purchased one of these 2 years ago for my Weber 5000. Built like a tank and we use it to make smashburgers, chicken stir fry, fish tacos all the time. Only thing I would do differently if I had to do it over is NOT to get the handles - its a place that rice/vegetables can escape when doing the stirfrys.
Pizza Griddle
I keep it stored in the grill outdoors 24/7/365. When finished using, I just clean it up and spritz grapeseed oil on it. No rust, no fuss.