I'd say it was a safer bet to use it - as well as not using anything but 12 quality and the save as function (colour space is stripped in the optimise save function i seem to recall).  But i cant think that progressive scans wont print the same as baseline.

"In every colour, there's the light.
In every stone sleeps a crystal.
Remember the Shaman, when he used to say:
Man is the dream of the Dolphin"

Rich Meadows Photography