Hi Jeff,
I've been wondering about how you are making out. A while ago I did this one:
http://www.transcat.com/PDF/Fluke_771.pdf
I found that it was a pretty useful troubleshooting tool when 4 - 20 ma instrumentation was involved. I don't think of it as a standard for calibration, etc. but really nice in the situations that we had in that environment.
But often, I wished that I had the same tool in higher ranges. Recently, I came across the 365 and had to jump. I no longer do 120 VAC controls on anything, unless there is absolutely no alternative. So in a 24 VDC system, being able to clip onto wiring and know what is going on has been really handy.
This obviously includes the automotive world. My neighbor had a car that was running the battery down every other day or so. I eventually found two problems on it.
So far, I really like the clamp on DC Current measurements. It takes a few seconds to settle down, but it matches the inline measurements down to 1 decimal place.
I have not yet used the 381 but that will be coming soon. More one this one later.
Bob A.
PS. I'm not a Fluke salesman, but I have friends there. I'm a frequent user.