That's pretty much what I understand as well as I'm in the same boat. It just isn't possible unless you have a scanner that has network drivers.The way I understand it and how it was explained to me was that unless the "all-in-one" device supported network scanning it wasn't possible. Don't quote me though.
I have the same issue. I keep the printer networked and connect via wired when scanning is needed.
That's pretty much what I understand as well as I'm in the same boat. It just isn't possible unless you have a scanner that has network drivers.
I don't understand why anybody would want to walk X feet to a scanner. I'd much prefer to be able to just lean over and scan a document/photo and lean back to my computer.
caveat : This doesn't include scan and print.