That is another style of holding reins on a double: right bridoon rein the right hand; left curb, right curb and left bridoon in the left hand. I believe the justification for that is that you don't need much pressure on the curb reins so they can both be held in the non-dominant hand. Makes sense to me.
|"The horse you get off is not the horse you got on. It is your job as a rider to ensure that as often as possible, the change is for the better."|