BOT reflects the infrared waves, increasing circulation but not "heating" anything, if that makes sense? So the increased circulation helps prevent stocking up and any inflammation that might occur after a hard workout. This past winter my mare's legs started blowing up like stove pipes, for seemingly no reason. There wasn't much heat, and she wasn't lame at all, but after trying standing wraps for the better part of a week and them having absolutely no effect on the swelling, I threw the BOT quick wraps on overnight just to try, since what I was doing obviously wasn't working. I was SHOCKED when the next morning my mare's legs were tight and cool. This happened a few more times over the winter, and the BOT would take the swelling right back down.
At first I thought that BOT would just "heat up", but after using them a bunch, it actually does the opposite for legs. I prefer them over standing wraps now, at events. It's all personal preference though. There are a few situations where I would choose to poultice, but I've not run into them with my current horse.