I would recommend clipless (this is your clipped pedals, I'll explain later) and SPD pedals on anything where the way in front of you is relatively certain and mostly unchanging. I quite clipless setups for commuting because there are all kinds of changes in my route. If you have wide bike lanes and not traffic on them like most bikes trails around here, sure, use a clipless shoe and peddle.
BTW, clipless means there is not strap over the top of your shoe, which used to be called clipping in. Has nothing to do with the hardware to hardware fastening devices known as clipless today. I know. I know.
So..what you're saying is that..clipless shoes/pedals are the ones where you...clip your shoes ONTO the pedals? lol I think I got it..