RNG, my neighbor has a land clearing business and has a John Deere tracked skid steer and forestry mulcher head for it. It will go almost anywhere and is very stable but, if working on grass, the tracks can really tear things up. His SS is quite a bit bigger than you're probably looking at but, tracks are not kind to grass when making turns.
Thanks for the warning, Rick. The R4s on the tractor also tear up the ground, especially if it's even a little wet. That's not much of a concern, though, since the fire took out most of the barley/rye/red clover mix I had planted and weeds have taken over. I can see how pivoting on one track while the other is held stationary, or even worse, pivoting in position by reversing the tracks, would really make a mess though. Just like cranking over the steering wheel while in 4WD on the tractor does.
Thinking out loud for a minute, most of my mowing involves running straight up and down the hills, cutting in one direction and then backing up over the freshly cut path to the beginning and moving over one tractor width near the end to setup for the next swath. All this "wasted" motion to avoid getting the tractor sideways on the slope, and to keep from knocking over the uncut grass. It takes more time that way, but it also avoids the sharp turns needed to run around making squares or rectangles. Even so, I've learned to use a sort of three point turn technique to make a right angle turn because it gives me more time to sense if the tractor is gonna tip. I drive beyond the place where I need to end up, back up in a gentle curve until the tractor is perpendicular to the original direction and pointing down the new cutting swath, and then proceed forward. That may help with tracks as well. Going from a steering wheel to a joy stick or a pair of levers is definitely gonna take some getting used to, and I'm willing to accept some collateral damage to the turf (weeds) to avoid going topsy turvee.
When I look back at what I've been using the tractor for over the last year, it's been mainly for mowing. And that's just in the spring for one or two weeks near the end of the growing season if I time it right. The driveway gets graded to fill in ruts and make a smooth path for the motorcycles in the spring, too, then I try to move gravel back onto the steep sections in the fall to help control erosion and improve traction. It also gets a workout moving pallets of firewood into the garage in the winter. And once in a while, I'll use the forks to move something heavy. The tractor was really handy when I first got this place when I was grading around the house and planting a lot of shrubs, but that work is done and won't be needed again until the shop building is completed. But even then, I don't anticipate any hole drilling because I won't be planting any shrubs or trees, not with the new normal need to carefully manage fuels in the areas around the buildings. The other big job for the track loader will be removing all the dead bushes/trees left behind by the fire, most of which are on slopes I wouldn't even try to move a tractor onto. And then grading the root ball craters smooth, again a one time deal (I hope). The track loader also opens up the possibility of clearing a path for a fence on the perimeter of this place, most of which is overgrown with bushes and trees, and all of which is too sloped for a tractor. Bottom line is I think the track loader will get a lot of use over the next few years, but like the tractor, will spend more time sitting still once all those one time jobs are completed.
That is so true. 
