Saw their own videos on their own rounds, and they proved themselves to be to poor to even be considered for usage. The big star design just looks cool, it severely under penetrates, and its total wound cavity does not look as impressive as a more standard "star" or even more superior mushroom expansion, of which many rounds can penetrate deep enough.
12 inches in gel is bare minimum, anything that cannot reach that depth is disqualified for recommendation. These things are coming in at 9 inches or so, so its a complete failure. The nose cone may go deeper? There are many high quality factory rounds today that will punch deep and wide, something the Tango cannot.