I know that Craig uses them. Every time I've been at his place, or at a meet where he's there, I see the AD2000s (and on occasion the RS-1s.) So I guess it wouldn't be surprising if I said the AD2000s sounded great on the BA. If I had extra cash, I'd get them as part of a intended collection (of no more than 4-5 dynamics); but I'm trying to be more disciplined with purchases now, especially now that my kids are old enough where I can restart my speaker building projects again.
The AD2000s are fast, detailed, very mid-centric phones. They sound totally different from the modded W1000X, which as you know are sort of a "closed Grado" with better bass extension. I believe both you and Anax have had the UERM for a while, so that probably gives you a good frame of reference for something that sounds balanced. This is where I'm going: Anax plugged the AD2000 into the BA, and after 5 seconds, sort of ripped them off his head with a "What" expression on this face. You had to be there!
Anyways, "wierd" sounding is apt description of the AD2000's tonal balance, yet I still very much appreciate what it does well. I think it's more a matter of sitting down and getting to know them - adjusting to their FR.
Now that I think of it, the AD2000s are easy to drive too, so that even rolling a couple of op-amps with a quality CMOY or CHA-47 could yield some interesting results.