@bhoggett,
dont quote me, but this is how i read it:
you can use a PCI card in the slot near the AGP slot and use an AGP card at the same time, but whether you'll get AGP 2x performance out of the graphics card is another matter, depending on the bandwidth - since they are on the same Bus.
so I imagine that a SCSI3 card with 10 devices on in that PCI slot will seriously impinge on the AGP's available bandwidth, hurting performance.
my advice if (and only If ! ;-) )i am right, is to use a low demand PCI card there if you must.
does that make sense?