I don't hold anything western or english. That's what deep heels & a good seat are for. My mom drilled us so hard as kids and we had to be able to do anything bareback first (even jumping & reining) before we were allowed to use stirrups. Then when we did get them (at least western) we were tortured by riding with marshmallows or raw eggs under our boot in the stirrup and expected not to mash them. I hated her for it then but she made me one of those riders that "stick like a tick."
I'm grateful now that she was so hard & expected so much. Most of my riding time is on greenies so I am 2 handing & teaching, I don't have a hand to give up for the horn if I want to work them through it properly. The last time I actually grabbed a horn was on an idiot of a mare that wanted to drift/blow out of her circles, she was being particular stubborn and I encouraged her rather aggressively to get off my leg and she blew sideways and if it wasn't for the horn I couldn't have pulled my leg up and into the seat of the saddle before she slammed my knee into the wall.