I actually wear these occasionally to the office with longer bootleg trousers and they are really comfortable!  I can wear these all evening and my feet don't hurt, although I cant wear them all day at work and still try to wear them into the evening.

This height is great for those with high arches.  The balls of my feet can get a little sore if Im on my feet walking around for extended periods of time/going up stairs, but sitting down for a small chunk of time can alleviate that.  I don't get blisters, which is great and this is true to size.