I may try it if my Chipokae starts acting up!
As far as the water conditions, lets say that the water conditions are in the middle (not perfectly ideal for either fish) so no one would have an advantage there.
I do know this though... Last time I went to the Aquarium Center, I noticed something interesting. If the guy put his hand in pretty much any of the tanks, the fish would scatter, run, and hide, but when he put his hand in the Chipokae tank, they attacked it. He said "No way Id do that if they were full grown".