Use the CB GRAVITY in place of product popularity sorting in woocommerce

Hello, is there a way to have the CB Gravity be useful in Woocommerce sorting ?
At the moment, Woocommerce has a popularity sorting option which always returns 0 products since a CB product will never be sold through Woocommerce.

Would it be possible to either replace or add a sorting option using the GRAVITY of each product, so we can mak the default sorting option be GRAVITY desc when showing products on our shop ?