Only issue with these custom version I am seeing is that you have to take screws out to replace the blade. screws and their threads get worn with constant removal. the threads wear and they get sloppy. and if your screws are going into the frame of a knife those threads will wear as well. sure you can remove screws to break down your knife for cleaning/maintenance or to move a pocket clip. But if you have to remove screws to replace a blade every day? or say 2-3 times a week ? I go through about 2-3 blades a week myself on my utility cutter. Love the customs but for real world daily use you need a quick change system no screws