To me I would think that you would be dealing with a lame or unsound horse for the rest of its life. Moving like that (and they start them young) has to do a lot of damage to the horse's joints. Plus I would think that after being trained to move like that they would continue to move similar even after the pads and chains were removed, and I am not sure that is something I would want to ride down the trail.
The last sale I went to there were two TWHs in the kill pen, and one in the saddle pen. The two in the kill pen went for $45 and $100 (and both were decent looking horses) and the one in the saddle horse pen went foe $300. Why don't you look there instead of spending 6000 on a trail horse?
RH Queen O Anywhere "Sydney"
2009 Sugarbush draft