As for the swivels. They certainly do change the action. Not necessarily worse, just different. With the swivels it is much more of a slithering like rather than erratic action. My thought is that this would work well for the bigger fish. I have found it looks really good with a heavier swivel up front and lighting in the rear. At nootka a month ago, the double swivel was the lure that took the 2 biggest fish of the trip, not huge but both at 14lb and a 20lb ling.
I really like how everyone has a different take on it.
And Fishin'Zinn: I personally put tape on both sides.