You won't hear a thing, Donny... It is utterly seamless. Functionally, the CS playing the chords is IDENTICAL to you playing the chords.

You would have no idea when I was using it, and when I wasn't, except that I might be using the bender, or drinking a beer with my left hand!
drink

Of course, if I screw up the chords when I record them, they are going to be screwed each time they play back. But get it right(ish!) and you have no idea at all that it is being used.
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An arranger is just a tool. What matters is what you build with it..!