Just started using slinkies this fall and I really like the feel that you get. Seems to be easier to feel the difference between the slide over the rocks and the bite then the hard jerks that lead gives. I think they will make a huge difference on steelhead. As for having to cut them down I make up several each with 5 to 10 shot in each, easy to change if you don't like the drift. My .02.
Good luck and tight lines, Jeff