It's great to hear that LV took care of you and will mail the replacement. I'm really considering the Sully as my next purchase, but I think I'll hold off until the peeling issue with the canvas has been resolved.
You probably know this already but if not, the Sully is being re-designed in 2016.
On the peeling, I dont know if it is widespread problem. I looked at the Sully clubhouse prior to buying mine and there are a lot of long time owners of the bag. I bought one but I've only had mine for a couple of months. I'm considering buying the other size too, mainly because I like the zip closure and I love slouchy bags. Good luck deciding!