The first president of the Malt Munching Mash Monsters (my club) was a graduate student in Microbiology at LSUMC. His considered opinion was that trub is yeast food, and that it was a good thing.
In my almost 10 years of brewing, both amateur and pro, I have never worried about trub, and have seen no detrimental effects from putting it in the fermentors with the wort.
Charlie