Wow, that is just soo cool to me.
i understand your frustration with the rubber-lipped plecos, mine is in a tank right now with an 9 inch common, 8 and 6 inch bichirs, and a rapidly growing oscar. because of the rubberlips' personality, i keep forgetting he is such a small fish, they can really be monsters when someone they don't like invades their territory. when i had to put my black moor into that tank (before the bichirs and oscars were in there it was more of a peaceful community tank) he tore that goldfish to absolute shreds.