I have trained and shown reining...my current horse is not currently on that track, but it is a bit like dressage (which I have trained and shown for as well) in that the basic principles of it are skills that a well broke horse ought to be able to preform - at least on a rudimentary level. The showring reining is a bit more styized than what you would normally ask your horse to do "around the house" but the basics........ROUND controlled circles, traveling in a STRAIGHT line, responsiveness off of the leg and weight for speed and direction, controlled, balanced stops....are all things that a well schooled horse should be able to do.