I'm moving away from home (again), and I won't have access to 220/240V power. I've found a heat treater that will use the traditional kiln for my heat treatment that I've already been performing, but salt pots are intriguing to me. The much faster and more uniform heating of the salt pots can mean a much finer grain size, at least according to some sources. The two quenches at two different temperatures is something I've been experimenting with over the past month or so. A multiple quench as we typically know it is actually counter-productive with air hardening and stainless steels, where with simple carbon steels and forging alloys can be multiple quenched at the same temperature for grain refinement. Using a lower temperature for the first quench can give the same effect with air hardening and stainless steels.
Salt pots also scare me, even if I could purchase them myself and use them, which is another reason to find somebody else who would offer salt bath heat treatment to others, but I've never known of anybody to do it, and knifemakers that have their own salt pots that might be willing to heat treat for others generally heat treat carbon steels with much lower austenitizing temepratures.
Edit: Thanks Nick, it was also apparent to me that the high temperature would probably be the hang up here, but I figured it was worth a try. Oh, and my dad doesn't have salt baths.