I had a call some time ago where a Watts Floodsafe supply had failed. It failed at the point indicated in the picture below.
It had been installed by the customer, and all parts were retained by the customer. I assume for damage claim purposes. I did however look at the method of assembly and was less than impressed by the size and strength of the locking clip holding the compression nut on the assembly. It was little more than a fine wire.
In any case the compression nut was attached to an open spouting stop valve, and the Floodsafe valve was laying in a rather large puddle of water that it failed to prevent because by the very nature of the failure it was not in position to do so.
In their defense it was installed by the homeowner and may have been overtightened. But I have never seen this failure on any other braided supply and I do question the stength of the locking clip I saw.
I am tempted to go buy one and disassemble it and several other brands of the regular braided stainless supplies just to get pictures of the assemly methods used to post... Maybe even clamp them up and use a force gauge to measure where they pull apart at.