I removed the peels that came off easily (more).
Some of my peaches were very ripe and a little damaged (I was given a bag by a farmers' market vendor) so I did a lot of paring and quite a bit of skin came off easily as I was doing so. However, at least a third of the slices had skin and I didn't even notice it in the finished product. Further, after skinning roasted peaches for peaches and cream pie I was left with a pretty good pile of roasted peach skins. I tasted a few and actually found them tasty and tender. I think I may be done skinning peaches forever.