Definitely an acceleration-prone cam. I had a Rolling Glide IC but I prefer the DW 9000 I have now, which is set to a linear round cam and has the straps on it. I think the Rolling Glide is probably the way to go with ICs though, if you want an even response from your strokes.
As previously stated it is an accelerator cam and a light great feeling pedal, I've been playing them for 18 years. I have a Rolling Glide and am not crazy about it. I can manage the motion and feel of the motion but it's just too heavy for me I prefer light pedals.