after paying 120€, 2 months of waiting, 4 hours of frustrating fiddling and 10 minutes of email support i got a HXC floppy emulator working in my asr10.
it replaces the internal floppy drive and mounts floppy images from an SD card. it does not replace a bigger disk or scsi, but getting rid of all those floppy disks is great!
the emulator works with literally every floppy device, may it be a classic computer, sampler, keyboard or even CNC machine. the only thing to keep in mind is that you need a PC with internal floppy drive to create disk images from floppies. (usb drives won't work)
just wanted to mention this, since the one or the other might still hang around with an old sampler or whatever.
hardware can be purchased at http://lotharek.pl/
and the software is available here: http://hxc2001.free.fr/floppy_drive_emulator/
as mentioned above, the software guy, jeff, does an excellent support job too!