Depending on the snow conditions, deep snow you're fine. But with little snow or racing on the ice, I think rubber track against the hyfax provides more friction, resulting in performance losses greater than the gains made from being lightweight. If it were mine, & had all windows open, I would clip every one. But i also run anti-ratchet drivers, so the clips are necessary. I would still clip it, even w/o the drivers though.just my opinion.