The main reason that I went with a TC on my overland rig was so that I could separate from it and go wheeling. I would leave it at a friend’s property, or a campground for security’s sake. Hoping to do that in 2020 when my group from mississippi-mud.com heads west for another epic getaway.
The other reason for taking the jacks is for the very reason that Mike brought up. Suppose the transmission fails and the shop needs to put it on a lift. Maybe you can nurse it to a campground, or stay on their lot while the truck is pulled to the shop and repaired.
As for my rig, It is a month’s worth of campfire stories all to itself. LOL. Check out my “Reserector” YouTube channel. Reserector Channel