Well, on the one hand you get instant hands free arranger play, and can play your sax whenever you want, but the other side of the coin is that the G800 is a definitely dated sounding arranger compared to the E60.

Me, I'd look around for maybe an RA module with the CS in it, RA-800 (I think that was it), and you could use both. But the G800 was a big 76. Maybe a G600 is worth looking for, lighter and smaller, and maybe doable WITH your E60, but I don't know if I'd go back to a G800 and drop my G70...

Nowadays, I get bye by dropping markers into SMF's that I have made of jazz standards, so I can loop sections and go to the horn hands free, and still have a certain freedom of structure on a head, but I would LOVE to see the re-emergence of a real Chord Sequencer again. Understandably, those that play nothing but the arranger, and play two fisted fairly poorly don't 'get' what the CS can do for you, but if you like playing full proper piano parts, if you double on horn or guitar, if you like to go out front spontaneously, a Chord Sequencer is your best friend..!