Would that not have the potential to scratch?
It's an aluminum scoop. It'll bend or whatever long before anything happens to the kettle. WSM kettles are what it's made for. Some of you guys clean with razor blades ... !
I have one of these, use it on my 18.5" 3-wheeler WITH a whisk broom like MacEggs linked to. I also regularly use the broom on the Performer, because if I relied on just its One Touch to sweep ash I'd be there all day and never get it all moved down into the ashcan.
I also have one of those dish/sink brushes but haven't tried it yet, looks too stiff?
What I'd like to find is a smaller whisk broom. The one like MacEggs and I have is too broad IMO to be easily maneuvered, even inside of a 22.5" kettle.