A lot of Scott customers experienced slow warranty service so Scott rods changed the entire way they handle their warranty service last year. Their rep said that this past year their average warranty repair took 9 business days. We sent in two rods at the same time in September and got one back after 9 business days and the other rod took 10 business days. Both rods were the A3 model.
Because I knew the issues with both rods I inspected both of them upon their return. On one of the rods I could tell where they fixed it. If I showed the rod to anyone else, unless they knew about the previous issue with a broken ferrule (client + clouser = inevitable) they probably wouldn't notice. The other rod was sent back to get a few of the guides replaced that had rusted up in the saltwater. They either replaced the sections or the fix was flawless!
So in our experience it has been good. But so customers can rest easily, we carry a huge stock of demo rods. When a customer comes in with a warranty issue we put a demo S4, S4s, A3, T2H, etc in their hand so they are not without a rod. I would guess there are other shops out there that would do this too. It doesn't hurt to ask.