You can use a steam cleaner. I wrap the head with a microfiber towel, and spray 1-2 mists of Adams leather / interior cleaner. Don't let it get to hot, and make sure to follow up with a leather protectant / conditioner
As a semi-professional detailer, I'll chime in on this one a little.
Protection:
Ceramic coatings will protect the clear/paint from normal dirt and grime, bird droppings, UV They will not protect against any type of pin striping, unless very very light in nature ( would still need to remove...
I just picked up a 21 mojave for a little over 7k off sticker price MSRP of 51,710 my price before tax was 44650. There seems to be A lot of rubicon and mojave inventory out here in CO