I have long used 3/8" wire rope slings, 12'er's, a pair always on board, mostly for truss bundles, sheeted gables, and girder trusses. Yeah they take a bend, (kink denotes a kinda of a different thing) but it's a given, broken strands is what I watch for, one strand sticking up and they are tossed. Having trusted my life for decades as a hang glider and than ultralight pilot (3/32", 7x7) and still as a fixed wing pilot, I maybe have a greater appreciation of the strength and durability of wire rope than most. At the same time I never overload it.
I once showed up at a steel setting job with a strange (meaning, we hadn't worked together before) crew of union iron workers that wasted no time in letting me that we'd be using THEIR rigging, and they pulled out this kinked up 3/8" sling that I would have tossed long ago, that they were totally comfortable with. I think I pay $18.00 for a 12', cheap enough to replace BEFORE they look that bad.