yes Ian a fad in my opinion also, maybe a benefit on container or other wagons that are connected in pairs such as intemodal's, IDA's etc etc, not for me though i'll stick with my Kadees's on my coaches as they don't give me any trouble whatsoever. I don't think they have the pleasing aesthetic look at all either.
I think I remember someone using a similar method by cutting the Bachmann coach pipe coupling in half and gluing magnets on the ends, thought that was naff as well, I only know that because I went searching for 2mm magnets, pretty pleased I forgot all about it very quickly
