I am a fan of framelocks. They make the knife simpler and can make them lighter. I am, however, not convinced they are the strongest lock in the world or even better than a well executed liner lock. I am not crazy enough to test this proposition out on my own knives, but Neptune Knives did.
Here are his three videos on framelocks and their flaws:
Best overall lock
One of the beauties of the Internet is that there are a lot of smart people out there and some of them are crazy enough to do spine wacks on their CRK blades. I am not sure if this PROVES they are unsafe, but merely suggests what the outer limits of their performance are. I still trust my Sebenza, but I am not going to use it to baton wood.