Actually, once upon a time, when I still had my Cokin filters. I had a Cokin P series CPL too. Once slotted into the holder (there is only 1 spot where this CPL will fit), you can still turn it. It is not bad. But my question is, when you move around and not on a tripod, do you want to keep the filter holder attached? I call both. The cokin I will use when I am doing landscape on a tripod. When on the move, I will use a normal Kenko CPL.