I guess I have a different look at things. I"ve been off roading for 40 years. Every aspect of 4 wheeling. I have used air tools like impact, rachet etc. a couple of times and I had regular hand tools with me to do the job as well. That includes changing axles etc. in the hammer trails and many hard core rock crawling trails around the southwest and beyond.
I used to carry CO2 but it was a larger bottle to take care of airing up large 37 to 40 inch tires. C02 is good to move to other areas and run air tools. But like I said, I've only used them a couple of times. My on board air is a 12 year old outback air compressor that I mounted in an ammo can and can move it with pig tails for battery or I have it mounted in the back of my truck and can control the power with one of the accessory switchs on the Raptor.
Compressor on the right, tools on the left. As you can see it doesn't take up much room and I can take it out and move it if necessary or use it in a different vehicle.
It has never failed me and I don't have to worry about failure and running out of air. It's a high volume, 100% duty cycle with a fan to keep it cool while running. I do have a 1 gal VIAR tank that I can attach and run an impact for a quick burst to break a lug nut off if necessary and on a long trip.
I guess what I am saying is with all the years and miles and trails I've completed, I don't think it is necessary with a Raptor to have the necessity for air tools. I can still jack up the truck and spin a lug wrench.
With tires, if you get a flat, You can usually plug it or if not then change it. Having a good portable temp or perm on board air with a good compressor is all you need in my opinion. 2 spares is also good if you are on a long trip with lots of off roading.
Mil T