I haven't seen a grapple like that before, what brand is it?
There are similar ones made by Fransgard, and Sundown. And I think a couple other smaller makers.
I bought this kind because I figured my primary uses would be loading the sawmill and cutting firewood from delivered logs. I imagine it’s not as good for brush, but hopefully still works somewhat, I haven’t tried yet. It’s also good for big rocks, not good for smaller rocks (they just fall through).