"scsi.device" is a generic driver name for accessing harddrives. In an A1200 and A4000 "scsi.device" refers to the internal IDE port. It's called "scsi.device" for compatibility, but it is IDE. So yes, surely you can use SFS without SCSI.
I don't know how far the patches of CWB reach. You need
this patch (or something newer if that exists) to get LBA48 support. You need LBA48 to access harddrives larger than 128 GB.