I made the executive decision today to not have one in this tank. Convicts are much more docile/peaceful and can get along in pairs/groups. These 2 looked to good to pass up and I wanted something you don't see a lot in other tanks. I have done a fair amount of research on them in the past couple months, and that's the only reason why I pulled the trigger today.
They acclimated amazingly well and within about 10mins were grazing the microalgae in the tank and barely flinched when I would approach the tank. They have been grazing ever since. Definitely one heck of a "worker" fish.
My striped bristletooth showed no aggression to either of them at all, so things should stay fairly peaceful.