I'll be enlisting the grapple soon for a landscaping project as well as to clean up some fallen trees from the winter. I wasn't planning on doing any work yet, but wanted to check my install so I went out to poke around with it a bit. In about 15 mins, I "accidentally" cleared away several of the 6" by 20' trees fallen across some paths, pulled down one that was alive but leaning, then dug up its root ball and pushed that out of the way, broke some of the full length 6" trees in half by pressing them against other trees, and then (finally thought of taking photos), scoured some untamed ground down to clean soil. The ground was leaf covered, peppered with various sized rocks above and below grade, and occupied by dense growth. I just angled the tine tips down a few inches below grade, dropped the loader, stepped on the diff lock, and tortured through it. Once the grapple bed fills up, you just clamp down, lift up, and start a spoil pile. It's a lot like having a backhoe on the front of the tractor.
The double grapple does a really great job of holding onto loose materials like leaves. It also makes grabbing big round stones a breeze. It was also a little better at handling the fallen trees more confidently.
The landscaping project will consist of cutting some flat terraces into a hillside. I'll scarify the existing grass with the grapple, then slice it up with the bucket to separate it from the topsoil, which will be reused later.
The grapple will also be used for creating a stone retaining wall/garden once the land is flat.