NieA7: Why would you need to dismount? You don't need the devices to be switched as well. I use a KVM as well. You could use USB switching in addition to KVM, but that leaves USB ports free to be devoted to a single machine.
Programs with floppy disc protection will /have/ to be replaced now; providing the A9 sells in sufficient number (which in RO land is 'not many at all'), copy-protected floppies will no longer be an issue. Patches will no doubt be publically available for older software.
As far as image editing goes - early days yet, but the spec. looks promising as is .
Philipnet: 100 beta testers is an extremely small amount for a new machine and massively-modified OS!!!! Pace no doubt used more than this when 32-bitting RISC OS for their set top box development. As far as numbers - remember that 'enthusiasts' are the tip of an iceberg which includes commercial clients.