Dura Mike, you ask a very good question and timely. While it has been discussed, it is always a good reminder, just like being sure to take your gloves with you.
I use a bottle jack, rated for and exceeding the weight of my axle/camper combined. Plus the appropriate Jack board (Sandy locations) wrenches and cheater bar. As well as pug kit, extra valve cores.
While you will get responsed about using your camper jacks to lift the truck camper up, to lighten the load of the truck to change the tire. But, remember, many flats happen in the least safest location, so getting it done and out of there is often a decision one needs to make. So having a Bottle Jack, couple of tools happen pretty fast. Also, the driveway test practice pays dividends when the real thing might happen.
Again, good question and important for all of us to think about, once in a while.
b