I've worn Clarks for work, in agriculture, for the last decade or so. I find that they are true to size, typically I wear 12 in boots/formal shoes and 13 in athletic or casual shoes. Here are a few positives and negatives I've experienced.

+ Great looking shoe, only gets better with age, especially compared to other workshoes.

+ The upper leather is durable yet supple. The sole is comfortable to walk on. these shoes usually don't require too much breaking in, as they are comfortable right out the box.

+ The high ankle design keeps your feet quite warm, dry and clean.

- I'm a bit confused as to why they elected to use a two eyelet design. The shoe would benefit from an extra pair of eyelets to allow for a more secure and comfortable fit. I felt that the shoe "flops" a bit when I walk.

- The rubberized sole accumulated a lot of dirt and gunk.

- These shoes will tire your feet out compared to more conventional tennis shoes or casual shoes.

- The shoelaces usually last me only several months before they rip, it can be quite a pain finding small enough laces to replace them too.