Just a small update on this, I was over at a friend that I sold my first plotter to, he had a roll of this vinyl, so I got a small sample from him.
Took a small piece and applied it to a Coke bottle just to test, it was pretty workable even without heat (but if you stretch it too much, the chrome turns dull where you stretched it).
But you can anyhow see the difference between this and regular chrome vinyl. The vinyl itself seems to be white cast vinyl that has a chrome layer applied on top, maybe thermally like from a Gerber Edge or something similar to this? About half an inch on either side of the roll is white, so is the adhesive side.
Here is a pic: