To get right to the point, I had a Mo' Joe lying around that was begging to be wrenched on.  So I took out the stock A5 mag', put in a roughcast A3 and aired the northern bobbin (the one closer to the neck).  I'm flat floored with the results!  I didn't have any idea it would sound as mean as it does (lots of growl, a bit of a 'smokey' feel to the high notes when overdriven).  The last time I put an A3 in ANYTHING it was neutered, but this is a whole new animal!  I'll report back when the honeymoon is over.