You really should never ever put your uro and beardies together..not because of the fighting factor but because they are very different species and both carry different diseases. Even if none of them are sick they can still be carrying some type of illness, that if say a beardie gave it to your uro, the uro could die from. They should never be allowed to come in contact with eachother because of this. In Nevada(where I live) in one of the exotic pet stores this happened when they had beardies and uros in the same display cage together, they had about 7 uros, most of which died in the cage, but I think it was 2 or 3 of them that they sold and they spread the disease to other uros that the new owners had. Huge problem.
Thats just my two cents worth. I'd play it safe and keep them seperated.