I know about those, and while i'm not putting that down, it always seemed a lot for the job they do - they're 4 times the cost of the device I linked to and tbh, I don't really *need* one;). I haven't seen anyone trying them out so I guess there's a good reason why the more massively produced alternative isn't used.
I also wonder though (and i'm sure there's a good answer along the lines of 'no'), is it possible to do more with such a device, by putting *something* between the floppy connector and a large storage device and doing more general types of file access via the floppy connector?