But Forever papers have been around for almost as many years as TMT WOW. I definitely remember getting samples of their WOW equivalent from a trade stand at FESPA when it was in the UK which is a few years back now.
I think the "magic" is in the toner. It has been said that you can use other transfer papers (such as TMT OBM) and to cure the item you need to bake it again after 24 hours which all points to the toner being the thing.
So they are essentially going up against OKI toner which is probably why they only sell the toner for one OKI model as well.
Interesting to follow this thread and see what happens.