I hope that Stewart & Andy sing. I've spent the last 20 years listening to recordings of The Police. I want to see/hear them live, stripped down to how they started. Just 3 men, making the music that has been part of the soundtrack of my life.
Having said that they could come on stage with Stewart on the spoons, Andy playing a comb & paper and Sting twanging an elastic band against his forehead and I'll be there. But since Stewart asked my vote is for him and Andy to sing because I love their singing -It’s magic!