Klinchers here. All we have ever used for nearly 15 years - no cable weakening, fraying, etc. Have never lost anything due to Klincher or cable failure that wasn't an operator error. Like taking off full throttle with 13# ball and probe down 80 feet.
As Tim said if you are running coated cable (we don't) I have heard you need to modify Klinchers or use something else.
CLarke