The problem with most spin bikes is that there's zero float and the tension of the clips is such that I'd kill myself if I had something like that on a bike that could tip over.

I've got Look Keos on my road bike, which I like a lot better than my spin room SPD experiences. I do like the greater contact between the shoe and pedal, but they are not for walking around. I like the stiffness of road shoes too because I have ankle issues. They took some practice getting used to clipping in since the pedals are one-sided and stopping without leaning on the clipped-in foot. But they have been easy enough to get out of quickly. And I love the float.