Walking shoes are designed for....walking.
They look good in the store because they're all black, and they seem to have good cushioning. But unless you're planning on never running during your games, put your money towards some cross-trainers. They are designed for higher impact activity - like running.
Try the New Balance 608's, 609's, or 620's, or the Nike Air Monarchs - reasonably priced, and very comfortable. And they won't ruin your heels, shins, and knees.