I have the kit and we have some in stock in our shop. They have not sold well though I think it is a pretty good system that works well for many indicator nymphing situations.

However the system as marketed does not work well when you try to apply the indicator up into the upper one third to one half of many tapered leaders because the tube is too narrow. Now I don't typically use factory tapered leaders for nymph fishing because I want a thinner butt section that will sink faster so I don't find that limitation to be an issue for me.

I don't consider the system indispensible but it is a nice easy to use compliment to the other indicator systems I use.