I like speed plays. But like saddles it is up to the individual and what they prefer. The pedals are light the cleats are heavy. You do need café covers if you are planning on walking more than a few feet. The ZEROs are fully adjustable so the float can go from zero to about 15 degrees. Once you know where to place your foot they are easy to engage. My second favorite cleat pedal combination is Look. I don’t find Looks any easier or harder to clip into.
No road shoe and cleat is easy to walk in and Speed plays aren’t an exception. I do like the way speed play cleats spread the pressure out on the bottom of the shoe. I am not found with having to be sure I have the café covers on if I have to walk across grass or dirt. If anything gets in the cavity designed for the pedal it can effect engagement. Still if I were getting new cleats I would place speed plays high on my list.