SASI device <-> PC ?

Has anyone here successfully interfaced a SASI device to a PC at the hardware level? I've got a few classic systems which use SASI (or not-quite-SCSI) controllers to talk to SASI-ST506 bridge boards and from there to ST506 type drives. As has been documented many times in the past here, an ST506 drive has a pretty tight relationship with its controller, and so hooking up the drive to a different controller (say MFM controller in a PC) causes all sorts of problems when it comes to backup. Hence driving the SASI side of things (and preserving the drive/bridge board relationship) would seem like a sensible move when it came to backing up data. In theory data could then be restored to a replacement drive if/when the original dies via the same method. Presumably inventing a simple SASI board to hang off a PC parallel port(say) is a lot easier than mucking around with the equivalent for floppy drives - or is the data rate still likely too low to cause timeout problems within the bridge board's firmware?