The only trouble I had with Knit Picks cables coming loose, breaking away from the metal thing was when I had 300-450 aran weight stitches on the 60" cable for my log cabin blanket, those lonnnnnnnnnnng outer logs!
I had to tug and pull the stitches along.....and SNAP!!! Darn cable let loose and I had a hot mess on my hands. Fortunately, I only had garter stitches on the cannes, easy to pick up. Tedious, but easy.
Had it happen again, too. Same scenario. So I've given up on using Knit Picks 42" & 60" cables for those 300+ stitches projects. I just cram them onto a 32".
I've tried "connecting" my Addi Clicks together to make a 50-60" cable, but that 3.5" metal connector is annoying as it slides back and forth through the stitches. It kinda snags.
So back to Plan A: the 32" cable of either brand.