I've never tried it. But, here's what I'd suggest (just my 1 and a half cents):
Go out and fish just with a kastmaster. When you find one that works a few times...then add a worm and see what happens. If they bite even more, then you're on to something. Adding the worm is a good thing.
If they quite biting, take the worm off. If they hit only the kastmaster again...then you know not to use a worm.
BTW, we' d enjoy a report of your "scientific findings".