And Fran... One of the most fundamental features of a workstation is the ability to edit a voice, and then store it WITH THOSE EDITS, to be called up into any setup you are using. The G70 (by itself) is completely incapable of this most simple, basic workstation feature.

This one omission alone disqualifies it (IMO) as a 'workstation'.

And a harmony generator (and style editor) is pretty much an exclusively arranger feature. I can't (off the top of my head) think of a single workstation with one...
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An arranger is just a tool. What matters is what you build with it..!