Where did you purchase them?
Men's Shoes
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www.allenedmonds.com
That's the link for grounded/leather soles specifically but on the website for grounded shoes only - if you click on filter > soles > leather soles that would have them. They do sell a lot of ungrounded shoes as well so I would just double-check in the description of the shoe to ensure it says "Leather Sole" and not mixed/Danite rubber soles
The quality is really good - I beat my loafers to death wearing 24/7 even indoors and not one of my loafers ever fell apart after at least 6 months+ of hard wear - even the one I wore in rain/snow still held up - the sale happening right now is really good also I had to pay around $400 for my loafers when I got them - they last a really long time.
The soles last a really long time even more than rubber soles but the only thing I would recommend to not do is to not wear them during the rain/snow - they actually still hold up well but if you wear them in the rain/snow frequently the soles lifespan will decrease a lot faster for sure.