SCSI drives can be adapted to work on a Fibre Channel controller, but I don't know if you can go the other way around or not (probably can, you may have to search a bit). Regardless, Fibre Channel and SCSI are NOT the same thing.
SCSI cables are extremely expensive when you start getting into SCSI-3 cabling types (Ultra-Wide, U160, or U320) They are extraordinarily expensive for a number of factors, including how quickly the individual wires can discharge themselves. There's not really a super-cheap option for advanced SCSI cables, especially if you want to have a lot of connectors.
I've got a 6-device UW cable that cost me almost $80. My 3-device U160 cable cost around $35, and my other cable came with my controller.
Fibre Channel works on a fabric switched based concept, instead of plugging all of the drives into a loop...the protocol is quite different although the drives are very similar.
