No they're not. There are "Black Talon" heavy, medium and light sets. There's Juggernaut, Marksman and Inquisitor gear that I've seen myself. There also should be (as in it exists) Powertech, Sniper, Marauder and Operative Black Talon armor. They're just not dropping. I've run Black Talon over ten times in the last two days trying to get a lower Inquisitor robe. I've seen six upper robes and nothing else.
The reason people want these is not because of the quality of stats, but because it's the first upgradable armor. It can be upgraded quite cheap using the commendations everyone is touting as what people should be using to buy armor.
The simple fact of the matter is that people want to use the upgradable armor and carry it along with them for a while, using their commendation at the mod vendor as they level up. It's far more efficient than buying disposable armor sets from the commendation vendor.
The problem is the drop chances are very obviously bugged. When a specific armor piece for one class is dropping every run, and ten runs doesn't net a single other piece then something is up.