I installed my pedals last night and the grip is amazing -- like wrapping skateboard tape over everything. I can better modulate and control the clutch pedal now for smoother shifting. They are pretty pricey, but definitely worth it IMO.
I used the self-tapping screws for everything except the brake pedal, which was the most time-consuming to do because it is a curved piece of metal. As such, I was only able to drill holes at the bottom of the brake since the drill bit kept wandering around at the top. But for all the other pedals, it made things easier by clamping them down and using them as a drill template.
Thanks to Finnegan for this DIY guide