Received Pat's Easy Change System today. Took my RFM off the tractor and had the thing installed in about 45 minutes.. If I did it again it would take about half that. Very Simple to install, a little tricky to plumb on the 3pt arms, but I love it already. Put on the Box blade in about five minutes, and was out doing some road repairs for a couple hours. Took off the box blade and put on the back blade to do the final smoothing over, again in about five minutes, and darkness ended today's playtime.
From what I"ve seen so far, I would recommend this to anyone who has cause to switch implements on a regular basis. It will make winters easier for me because I would like to switch between the back blade and the 3pt blower depending on the type of snowstorm and how deep it is. I would expect that this will make it possible. I wouldn't have considered switching back and forth without it.
In summer, the RFM is on about 90% of the time, but I do sometimes use the back blade or box blade or post hole digger, so it will come in very handy.
Sorry, I didn't see that TBN sells them. Got mine from Nothern via Amazon.