Outside of the obvious pain of the hook grip, how much more "secure" is it than your normal mixed grip? The bar always has a problem rolling out of my right hand (the palm facing towards the body).
The problem before was that I never "set" my grip before pulling on the bar, now I have learned to set my grip before pulling. However another roadblock has occurred with my grip. I'm thinking of doing more grip work (farmers holds, static holds) and/or switching to the hook grip.