Why don't we do this all the time?

Stateline suggested hanging the stirrup leathers underneath the flaps while trying a saddle, to prevent visible rub marks on the flaps. So, I tried it. As an added bonus, it completely eliminated any pinching and rubbing from the stirrup leathers as I rode in just jeans. Plus, no visible marks on the flaps and no flapping stirrups while lunging w/o having to tuck up the stirrups. So, why don't we do this all the time? Granted, it means you can't adjust the stirrups from up top, but, after riding western for so long where you can't do that anyway, I don't find that I miss it.