I never knew until a few months ago that there even was such a thing as stainless steel yarn. I was joking with a friend at work that "If you could make yarn out of stainless steel, I could still split it." And she said "They do make yarn out of stainless steel". And then proceeded to bring up the website for Habu Textiles. Next thing I know, I'm finding other Habu yarns in my LYS... but not the stainless. Who knew? But I'd assumed that it was a "specialty yarn" only available from exotic yarn manufacturers... I certainly wouldn't have guessed Lion Brand would make it.
But I could still split it.
And I wouldn't imagine it'd be very soft. Or practical.