Hi guys,
this is a very interesting topic, although in my opinion its real place should be the General Arranger Forum (and not a specialized Forum like this one).
I am not a pro myself, but I know quite a few of them; one of my friends composes jingles for TV commercials and he uses his arranger to build up a kind of "musical skeleton"; he then adds manually other tracks and nobody, listening to the final result, would be able to tell that he used just an arranger keyboard to lay down the whole arrangement. He uses to say that he would be much more expensive (and time consuming) to hire real musicians to lay down all the rhytm tracks.
The same goes for live performers; unless you are into hard rock or progressive jazz and perform always with at least a couple of musicians (i.e. drummer and bass player) you can save a lot of time and money playing with just your arranger keyboard in front of your audience; the quality of the final result will be up to you and to your musical/vocal abilities.
I tend to agree with Fran, Dave, Sami, Arno and Arthur on most things they wrote; in particular I think that using an arranger keyboard means "cheating" only if you use it to mask your (limited) musical skills, rather than a tool to extend your possibilities.
Friendly,
Andrea
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Korg Kronos 61 and PA3X-Pro76, Roland G-70, BK7-m and Integra 7, Casio PX-5S, Fender Stratocaster with Fralin pickups, Fender Stratocaster with Kinman pickups, vintage Gibson SG standard.