I had one and it was awful. It fell off the suit a couple of times with stuff in it, once in a shore exit where I was able to retrieve it, and once it fell off on a wreck dive and I didn't even notice until another diver on the boat gave it back to me. The pocket fabric wore out, so there was a hole in the bottom relatively quickly. I can't recommend it at all.
I glued a pocket from DGX on the other side of my suit which has fared much better (I have one on both of my wetsuits). Although it doesn't look as nice, it's much more functional. I think the WPAD pocket was an interesting idea but in practice it didn't work for me.