I had the same school of thought on bristle worms. Then when I removed all of them some things went downhill that I can atribute to thier removal. So if you scoop any more out send em my way!!!
A lot of people use the magnet glass cleaners. And I definately agree that some sort of sand sifter is suggested for the sand. Diamondback gobies are my fav
I've never heard of them eating them before. I've had trouble getting long nosed butteflies to eat anything at all. Peppermint shrimp are good for eating rock anenomes
Just make sure that it doesn't wander up the sides of your glass and get caught in a pump and spew out all it guts poisoning your tank like mine did!!!!!