Kudos to Roland, this is a really good pedal! Build quality is excellent, it is very sturdy and VERY solid, heavy. It doesn't budge, even on lacquered floor without any cloth beneath it to prevent slippage (it has a number of anti-slip rubbers which seem to do a great job, but I think the main thing that's preventing this pedal to move is its sheer mass).
I bought it to use it with my Kurzweil PC3K8, which doesn't support continuous pedals in its regular sustain, sostenuto and soft pedal inputs, but I will modify the wiring so that it works. The pedal is absolutely worth it!
Get one, especially if you have a Roland board that supports it. You will not regret it!