The anti-grip mechanism is very handy. I own another pedal from Yamaha and it always slips away, although it also has the rubber bottom. This one doesn't slip, at least, not that fast. And for sure it's WAY better than Roland DP-2. I owned it in the past, and it was a nightmare, especially for the gigs.
So, if you consider buying DP-10 one or DP-2, buy DP-10! It's not that expensive, but it will save you a lot of nerves.