I think that it's one of the current "fad" baits, and should die off soon. Anywhere I can catch 3 to 5 fish on one rig at the same time, I could probably catch the same fish on consecutive casts because they are stacked up like cord wood. Not doubting anyone's claims, but I don't see it as some big wow bait. I may be totally wrong, as I've never tried it. (Haven't had the desire to use it yet).
Hard to impart action to five baits at the same time too.
I don't think I could use it anywhere I fish, as it would be clogged with grass. I may have to twist up a few of my own design to see how they would do, but I'm fairly certain the "original" shown on that web page above would come up with a 30 pound grass ball on the end of it. Pretty simple design actually. I've done something similar in Florida with two leaders (vice 5), and it didn't work for me. Might have been the area I was fishing too.
All the best,
Glenn