About twenty years ago, Lloyd Westerlind had a 44 Special Standard with Hitch-all and a 444 Standard with the usual 3-pt. set-up as well. They were out in his big east field, and looked to be in decent shape.
While perhaps uncommon, there is no reason the systems wouldn't work on "standard" tractors. There may have been some adjustment of the steps to accomodate motion of the lower links, but I really don't recall.
At that moment, Lloyd had some other things that interested me more so I passed on these. Seems like when I was there in following years, they were gone. Probably wound up in someone's collection...who's gottem'?