To tide you over, look at Magura's new shock. Air sprung, air damped, and they claim zero maintenance.( the spring is the damper on that too they claim) Then try and to figure out how to do it with high pressure Nitrogen, oil and a bunch of shims.
Yes. But in different measures, and in a different way. They use about 150psi behind the IFP, and 75-200 in the boost chamber (a secondry IFP). And the Millyard runs @ 2300psi IIRC.
So even if you run a DHX 5 AIR @ 300psi with max boost your total psi is 650, but it's spread over 3 chambers with X amount of volume.
THe Millyard condenses this pressure into a smaller chamber, almost tripling it. And then uses clever manupulation of the oil flow to control it as far as I can make out from what's been published on it. Which isn't much
"The bike has been designed to be quickly and easily folded up to fit into a small car boot by simply removing the front wheel and the rear shock bolt. The swing arm pivots on the bottom bracket and allows the rear wheel to swing round into the front forks. Once removed from the car, the bike can be ready to race in under a minute."
"The workings and technical details of this shock are currently classified with technology information that has arisen from the MOD workings on Chieftan tanks. The shock becomes incredibly hot during riding so a “Do not touch” sticker should be applied!"