Yeah, pretty much solved a problem that didn't exist.
But, the benefits for us are in the many uses the nitrogen serves in a single system:
1. pressurize the water (replaces a pump and second battery)
2. fill tires (replaces a compressor and second battery)
3. fills off road shocks
4. runs air tools at the track (as a support vehicle for our car)
There are no moving or electrical parts, so the failure points are just the connections in the lines. I'm not actually sure how well they're going to hold up to our kind of off road abuse, but we'll see. The handful of folks we camp with have seen at least 2 failed 12v pumps and 3 compressors in the past 2 years.
The last keg can be taken out and brought to a group kitchen for portable water. it doesn't need constant connection to the N2 bottle in order to flow the water, so it can be really portable.
It's reduced our dependency on a electricity to the point that we are just running a 40Ah Lithium battery for the fridge and inverter for the coffee maker.
the biggest downside is that it isn't a never-ending source - we will have to fill the bottle occasionally, and if we run out on the road, we're out. Our longest trips are typically a week, and the bottle should last far longer than that. If we wanted to go for a month, we might run into trouble depending on how many times we air down and up the tires. Our plan includes a contingency to double our N2 capacity if we need it.
