I have double wide feet plus no cartilage in my big toe, making it sensitive. The AP1 is the only show that is comfortable enough for me to wear all day. I have been wearing this style for probably 20 years, maybe more. In fact, through the years, I have bought probably a dozen pairs. That should tell you how comfortable they are.
The AP1 leather walking shoes are the most comfortable shoes I have purchased for walking and exercise.