There was also the somewhat infamous Zip 100 Plus drive which was both parallel and SCSI compatible. (Tidbit: Parallel port Zip drives are actually SCSI devices with a Parallel-to-SCSI converter. The 100 Plus was just smart enough to know when to get the converter out of the way.)

IIRC, it was very twitchy on Macs- wanting to be the only/last device on the chain, etc.