I would love to be able to use a Unibit to drill a bunch of holes. But I'm going into 3/16" steel, and most of them are 1/8" depth between the different diameters. The ones that are 1/4" are too small. So what I really want is a Unibit that goes up to my desired diameter (11/16" in this case) and then just stays the same diameter or even gets smaller.
I will probably just pick up a cheapo one from HF and see what happens.