I love Clarks' shoes for work - very comfortable but also dressy enough for work.  These slip-ons in particular are extremely lightweight, which is a bonus.  My only problem is the detailing on the to of the shoe.  There's a thin strip of shiny plastic sewn into those contours, which to me makes them look less classy.  I couldn't tell from the pictures, but in person the strip is pretty noticeable.  These fit true to size and are on the wider side, so if you normally wear a 10W you can probably make do with an 11M like I did (the 10W were sold out).