I actually have to shut my traction control off in my F550 service truck on a couple different jobsites. It's to get up steep gravely hills.
The traction control will actually stall the truck out and prevent me from getting up the steep grades. They aren't very long. But your crawling through an area and going slow to keep from tearing something up.
Then a sharp 90° turn and up this small but steep slope to get out.
If the traction control is engaged, it will limit the rpms and apply the brakes to the tire it deems to be slipping.
Between the two, the truck will get almost to the crest and just run out of juice with the go pedal pushed to the floor.
If I shut the traction control off, the tires will spin a bit here and there, but it will crawl right up the slope.
Granted, the service truck weighs 17,900 lbs.