What problems would a tennessee walking horse have in training level dressage

I want to know what challenges I am going to face if I want to train a full-blooded walker for dressage, and what are the differences between gaited dressage and regular dressage? Do they move differently than the classic dressage horses? Do they still trot? Please don't tell me to consult an expert, already doing that but so far no one knows how to help though I'm still trying. Can't find any books or websites on it iether.I'm just curious if its physically possible for them to do. Just how versatile are they? And how true is it that any horse can do training level dressage?

Speaking from someone who is in TN with lots of gaited horses around, YES it is completely possible for them to do it and do it great! The question for you to ask yourself is if they need to do the gaited horse dressage tests or the trotting/regular dressage tests. If your horse trots in addition or instead of doing a running walk then you are fine with the regular dressage although you may not get too far in it unless your horse is very athletic and not built like a typical walker. Because walkers are built with a longer back, sloping croup, and usually with hind legs up under them, it is hard for them to do much more than first level in regular tests.

The differences between gaited and regular dressage is the test. Everything else is the same- same arena, same idea, same scoring system. Yes they move differently because the tests are different. No they do not trot, they do a flat walk, running walk, and canter. There are higher tests for them beyond second level. As more people get interested in it, there will be more tests.