Tip: Make sure that palette knife has no burrs or sharp corners on it, or it *will* scratch that palette. I got 30+ scratches on mine before switching to a palette knife that is smooth. My scratchy palette knife looked a lot like yours.
You have two options with that brush: It's a rigger (I think) and it will be wonderful for painting long lines. It is indeed very soft. Try putting some nice wet paint on there and try a long curved line, it's good that that. You basically drag it slowly in a line.
Your second option would be to send it to me. I love those.