However, CV parts in the front axle wouldn't be subject to the level of heat (and heat cycles) a brake rotor would endure.

I'd say that if, at this stage of understanding of metallurgy present in man's progress, there isn't a proven reason that it works, then it may not be worth paying for.

Frankly, I've heard the term used extensively in regard to high stress auto parts, and just assumed it was a proven and reliable thing to do for certain applications. I haven't ever checked into the process any more than to understand what the basic idea was. I had no idea there was any controversy surrounding it. Good thread.

John B.