http://en.wikipedia.org/wiki/Clydesdale_(breed)
Looks like they are Clydesdales indeed.
Could be, for sure. They do look like draft horses, and Clydesdales do have that beautiful long hair above the hoof (love the Budweiser horses!)
Another draft horse that has the same long hair at the feet is the Percheron. My husband watches the RFD channel a lot, and I always love seeing the horse farms with breeds I've never heard of! Many of them have the long hair at the hoof. But at any rate, they're all beautiful to me! :)