Update: posted my Otter Mercator yesterday, today I got a Kwik Stud and modified it to work better for this slim knife. Here are some pics of the finished product, and explanation

USA Knifemaker Supply Kwik Thumb Stud Black Oxide

OTTER-Messer from Urban Kit Supply

OTTER-Messer Mercator Folding Knife 3.5 Carbon Steel Blade Stainless Handle

Otter Messer: Mercator Stainless Steel Knife – Tennessee Outfitters

A true masterpiece Amongst Cult Knives- Otter Mercator Black Cat

Otter Mercator - slim, strong, time tested edc knife. And another HUGE thank you to my buddy Stuart

Otter - Messer Mercator Brass Large Carbon : Sports & Outdoors

161 - OTTER x 877 Workshop – hand engraved Mercator Knife

Mercator Black Cat Carbon Knife : Sports & Outdoors

Mercator

Messer Mercator Stainless OTT10826R_AB : Sports & Outdoors