No, I have a few reasons for not wanting Kadees even though they may look better and perhaps even work better. They are: My car fleet is too large to convert, the cost would be insane. I already have the Lionel electromagnets installed, and finally, even though my track work is pretty good, there are still a number of places where cars may come uncoupled due to height issues or vertical anomalies.
P.S. The horn hooks in HO and the Rapidos in N were a lot worse than the "lobster claws" in 3 rail O. They may be ugly, but they function well enough.