All my 9890 cartridges run out either during a print, or because a head cleaning rejects less than 1% for the cleaning. I have examined prints with an 8x loupe when this happens, and I have been unable to detect the cartridge swap.
There was a printer recently reviewed by Keith Cooper, maybe the P600 or P800, where he could see the change, but with older models of the same size (3800, 3880), I haven't been able to detect it.
Brian A