A stallion I jumped at that level loved jumping so much it was funny. If I put dressage tack on him for flatwork, you could feel his strong disapproval. He would moan as he was asked to do halfpass and other more demanding movements. He would do it to please me, but he didn't enjoy it. BUT, when I put jumping tack on him he would grab for the bit. It made bridling him even harder.
If the jumps were low and boring, he would show his displeasure. The infrequent times when the jumps were high and tight, you could feel him come alive. The tighter the turns, the more he loved it.
You may ask....Well, how do YOU know he loved it?" If you ever saw the horse, you wouldn't ask this question. The few who have ridden him (a member of another forum is one of the few who did ride him, though many were offered the opportunity, will tell you how much he lived to jump.
Sadly, this stallion died, recently, after long health related infirmities. Not nice seeing this noble horse go this way. I almost wish HE had left doing what he loved....quickly, as Hickstead did.