Only in Japan ?
It may be an unique Japanese culture that we often take our shoes off and wear them again at many places even when we are working. So it is convenient to carry your personal shoehorn and it may be impressive if you can let your client use it after having business lunch at Japanese style restaurant.
This shoehorn uses the cordovan leather of Horween corporation which is know as "the diamond leather ". Horween corporation has set the standard for the highest quality leathers since 1905.
The leather case holds a metal part neatly like a key case, and the inner leather prevent a metal trace to come out outward. It is designed sophisticated and functional.