When I leave work I normally walk 10 paces and then I'm outside, clipped in, and riding. So SPD-SL is not problem in that regard. But sometimes I do need to use the, um, facilities in the building after I've already suited up (I know. Don't ask.), which is much more than 10 paces, and on a separate floor. This is a hassle, obviously. Being able to walk normally up the stairs and the across to the other side of the building is both faster and easier.