That "speed in transitions" phrase does NOT mean those shoes are for running or walking. It just refers to the fact that they have two velcro straps instead of the usual three, so they're quicker to get on and off. And if they're at all like most triathlon shoes, you'll want them off quickly. I think they make the shoes pain-inflicting to motivate you to finish the ride quickly.
My suggestion:
Cannondale Roam
These are my commuting shoes, and they're among most comfortable shoes I've ever owned, not limiting that to cycling shoes. They feel like a very supportive pair of trail running shoes. My job usually calls for dress shoes, but on the days it doesn't, I often just wear these all day.