I have a Roam as well, I have a pair of Shimano PDT400 Clickr Pedal on mine and ride with Nashbar Ragster II Cycling Sandals. This combo really works well for me. You will not gain much in performance with clips , most of us "regular" riders don't, but will gain a bit of ease from having your feet in exactly the right place. I was getting some foot and calf pain caused by improper foot placement. I have a bit of neuropathy in my feet and without the cleats / pedals my feet would often slide off or I would pedal with my heel or toe tips which caused the pain.

The Clickr pedals are easy in and out and use the multi release SH56 silver cleats so they come in and out more easily. If you pull too hard on the upstroke you may unclip them, so they are really ideal for beginners and those like me who really want more of the indexing than to be able to pull up really hard.

I've tried some pedals without the platform and had trouble getting started like at intersections where I wanted to stay unclipped in case of a emergency, the are hard to use without being clipped in and if you miss the hookup your feet might jut slide completely off. The regular SH51 black cleats also hold tighter and make unclipping a bit more effort, something I found out when making a panic stop a few times, so I stick with the silver cleats.