I would recommend against it. Blue beauty's (like pretty much all snakes) are not social and housing them together, unless in a very large setup, is ill advised. They get fairly large and it would be difficult to provide both with their own identical hot spots, hides, and personal space. Without this consideration, one snake is likely to suffer and stress to the benefit of the other.
I think you could get the same desirable aesthetic simply by housing them one on top of the other in a cage stack.