I'm thinking of trying it when we go during the first week of November. I don't know if it would be practical if you were going all the way from the MK to Epcot because of the crowds getting out of the park and to the various transport options. We're having dinner at Ohana in the Poly, however, so I figure we can make a quick dash to the TTC, beat the crowds and catch the monorail to Epcot.
I have no idea if it will work, but I think we're going to give it a shot (unless everyone is just dead tired).