Is there a controller with a sliding pad like the Nintendo 3DS?

I have been looking for a controller with Schiebepad for a long time, but have not found yet. I'm currently running an Xbox Controller on the PC and am therefore only moderately satisfied, the 3DS Schiebepad I find a lot better. Are there such controllers?

I actually liked the sliding pad of the 3DS as well. But I would not know that there's a controller with Schiebepad.