Hollow Ichigo has used Zangetsu in the real world, remember when he fought Byakuya? And he's never successfully eaten Ichigo, merely fought with himI think that the reason he couldn't use zangetsu is because he didn't absorb Ichigo, they didn't merge yet. it's kind of hard to explain but Ichigo and his hollow were like two in one, one is a shinigami, the other is a hollow so the fact that he didn't eat ichigo made impossible for him to use zangetsu in the real world. notice when ichigo fully became the hollow he still had the mask on.
And the Menos Grande are formed by hollows that have absorbed other hollows, but are the higher types necessarily formed the same way?