Do reining horses make good western pleasure horses?

Of course every horse is an individual and it is possible to have a horse that could do both, but this is usually a case of 'Apples and Oranges'. Reining horses have energy, since their sport requires loping/galloping, sliding stops, spins, fast backing, ect. Western pleasure horses are bred and then trained to go slow. They should exhibit slow, soft gaits (walk, jog, lope), with relaxed topline and a calm demeanor. These two types are at odds with each other.