I don't know much about beardies, but know quite a bit about Green Iguanas. I have kept a group of one adult male, plus two adult females successfully, (in a room sized enclosure built into our garage) but did it after a lot of consideration and research. However, having seen the damage a male iggy can do to another male or female iggy (not ours!) I dread to think what it could do to a beardie.
Apart from that, iggy's need quite high humidity compared to beardys, and as Nat says, different temps.
He IS lovely though, one of the nicest I have seen!