Hi David:
Thanks for the post.
Actually, the LiveWires Metal set is exactly what you described: a Metal for the bridge and a Classic for the neck. This gives you a lot of diversity in tone, and lets you back off for a cleaner rhythm sound.
Jackson / Carvel uses this setup on their Model A:
http://www.jacksonguitars.com/gear/gear.php?partno=Model_A
I hope that helps