I don't like Slayer (and yes, i've seen 'em live), but if this package came by here...yeah, i'd heavily consider seeing it, and i'd probably end up staying to hear Slayer perform the 4 songs I like from 'em.
08/08 - Slipknot/Lamb of God
09/30 - Revocation
10/04 - The Black Dahlia Murder
11/12 - Kataklysm