Looking for opinions/technique tips from all you experienced roadies and triathletes. I have been mainly mountain biking since I started cycling again. Consequently, I corner with pedals even so as not to catch on roots, berms etc....(Even when the bike is leaned way over)

I have recently been road biking more and enjoying the speed. I noticed the friend I rode with last week puts her outside pedal down for cornering, and she said it gives her more traction. Thoughts or style comments appreciated!