I did take the chance and picked up another false perc this afternoon. Picked out the biggest healthiest looking one. (Still small, probably less than an inch) Thought it would end up being bigger than the bully, but they are about the same size.
Fully expected conflict after acclimation...none. The bully hasn't shown an ounce of aggression and they've already buddied up and are exploring the tank together. I wonder if my suspicion was correct, the other clown might have been a different species. I never could get a good shot of him (since he was more concerned about getting his eye plucked out), but was a darker orange and lacked the black trim on his fins.
Enough rambling, no excuse for a thread being this long without blurry pictures to go with it.
And after exploring the tank for a couple of hours, the picture below shows their preferred hangout. Naturally.