What's the advantage of downturned shoes?
Downturned shoes help deliver power to your toes when climbing overhanging routes or boulder problems with small footholds. The more aggressive downturned shoes can be super uncomfortable to wear, but will offer a noticeable improvement when encountering steep stuff in the higher grades, say 5.12a and up.
To make best use of the shoes hooking abilities, it's critically important to develop the entire core foundation of your body, including your lower back, your obliques, hip flexors, and abdominals. Without a strong core, your midsection will sag, increasing weight onto your arms and not transferring the support and power of your feet through your body.