I have but it was so long ago I don't remember.
But I'll tell you a trick I use:
Most higher output humbuckers in parallel don't sound so great or like a PAF. Part of that is because of the load 2 singles in parallel want to see vs. what a humbucker wants to see, part if it is the high end of 2 singles in parallel, even when next to each other on the same plate, kind of kills that "humbucker" thing. So what I do is, on the switch, you have the middle two posts of your 6 posts dpdt switch where one side is the negative of one coil and the other side is the positive of the other coil. When the pickup is in series, these are connected by a jumper across the upper to posts of the switch. Ok so wire a 470k (or 500 if you are using metal film and have one) resistor in parallel with a 1000pf cap across those middle two posts. This affects nothing when the pickup is in series since those posts are shorted, but when you pull the switch to put it in parallel, it creates a ~250k resistance to ground, more what singles want to see, and the 1000pf cap rolls off the highs such that you now have something that is lower in output and brighter/tighter, but still sounds like a PAF.
I've seen people complain about AT-1s not sounding so great in parallel, that trick cures it and makes them a PAF sounding pickup in parallel. Ditto others.
I'm somehow finding it difficult to appreciate the continued insinuation that I don't know how to wire a guitar because I didn't like the AT-1.
Not saying that at all. I'm sure you know how to wire it, that's why I'm saying I bet it was defective given how far off your descriptions of it are. Your take on other pickups doesn't seen far off, so I can't say it's the sound of your rig etc,, I'm really thinking the AT-1 had an issue. It happens.