I have carried tip-up and tip-down knives with round holes and never had a problem or a complaint.
Within an hour of carrying a thumb-stud CRKT Mt. Rainier, the stud caught on my pocket. The next day it caught again and this time it put a hole in my pants. Maybe it wasn't completely the fault of the stud, but I am staying with holes.
Within an hour of carrying a thumb-stud CRKT Mt. Rainier, the stud caught on my pocket. The next day it caught again and this time it put a hole in my pants. Maybe it wasn't completely the fault of the stud, but I am staying with holes.