In my experience since the coloring on the two triggers is so different, they should be fine. My humu was in the tank first, and we got a clown trigger that was about the same size and they were fine.
The rules of our tank for triggers:
If they're the same size/shape, must be way different in colors
If they're different sizes watch the bigger one closely and make sure the smaller one eats.
If one is more aggressive than the other, take the aggressive one out (for at least a day) and put him in later. That way his dominance is no longer established.
We've always have had an aggressive humu but ass long as the more timid fish are in first they're fine. As for the other inhabitants in your tank I'd say it depends on their size.
It can be done though!!!