TWD, you are starting to sound a little TOO purist to be hanging around an arranger forum!

Let's face it... there isn't ONE sound in an arranger, or let's be fair, any other modern keyboard, NOT ONE that is EXACTLY like the real thing.
NOT ONE. You can't pick and choose what you consider acceptable. If nothing but the real deal will suffice on organ, neither will playing a sampled piano, using sampled drums or bass will, either. You want to go ahead and tell us that no REAL musician would ever play with an arranger, either..?

Let's face it, were we ever to play to audiences that were as picky as these mythological organ 'purists', we would get booed out of the building the first note we played!

Me, I'd be happy to go and see Joey DeFrancesco or any organist worth his salt play on any clone and sim out there. But that's maybe because I'm more interested in what he PLAYS than in what he plays on. But then again, I'm not an organ dealer, so maybe it's not quite as important to me..
