After nearly 45 years in maintaining lots of different kinds of equipment with lots of roller chains, I have NEVER had a clip type master link come apart. This has been on cars, aircraft, farm equipment, boats, industrial equipment slow speed, very high speed, shock loads, you name it. The 'clip type' master links are at least as good a 'crimped' , and undoubtedly far more certain than a crimp job by inexperienced DIY'er.