I used one of these for a long time when playing. I had a horrible habit of sliding and ripping open my knees. Not a problem once I started using this.
I wear this. It has saved me countless knee scrapes. I was the same way, always dealing with scrapes. Had one particularly nasty one where the scab kept getting ripped open. My sock on that side actually got pretty bloody one game. Haven’t had an issue yet with that slider.