I have used the 1Z also. Got a small sample of it. Used it on light dust on my car. I liked the product, cleaned really well and left a very slick surface, similar to Prima Slick or Optimum QD. The deal killer is price. It's sold RTU at $10 per 500 ml (17oz). Even though it seems designed to use less than a typical WW, I.e. Mist on not saturate, it would still take me a half of that bottle to do a car. Not even close to being cost effective.
There was a price comparison chart on the AG forum and almost all of the leading WW's are way less expensive than this given their ability to be diluted. UWW+ is quite cost effective, as is pinnacle. I have both of those and would can't imagine purchasing the 1Z. CG Eco a Smart is great too, but previously suffered from being cost preventative as well, but the new formulation is a fraction of the price of the old formula due it's dilution ratio. I plan to try it once I use up all of the old version that I have around.
UWW+ and Pinnacle are winners in my book.