First thing:  Shoes run small. I wear a 10 womens and have to return and reorder a 10.5.  The gray is very nice, subdued and feminine.  I don't think the shoe looks bulky.  They are a little heavy but not bothersome.  I have 2 other pairs of MBT - a sandal and a black maryjane and love, love, love them.  Very comfortable.  The only difference I felt from regular shoes is that my calves are getting a better workout, my legs ached a little and my upper neck was a little stiff which I attribute to walking more upright with better posture.  While wearing the shoes I actually feel like it makes it easier to walk, more bounce in my step and easier to walk up hills.